US9572268B2 - Display device - Google Patents

Display device Download PDF

Info

Publication number
US9572268B2
US9572268B2 US14/551,989 US201414551989A US9572268B2 US 9572268 B2 US9572268 B2 US 9572268B2 US 201414551989 A US201414551989 A US 201414551989A US 9572268 B2 US9572268 B2 US 9572268B2
Authority
US
United States
Prior art keywords
display
light
display device
frame portion
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
US14/551,989
Other languages
English (en)
Other versions
US20150145755A1 (en
Inventor
Shunpei Yamazaki
Yuichi Yanagisawa
Hisao Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Semiconductor Energy Laboratory Co Ltd
Original Assignee
Semiconductor Energy Laboratory Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Semiconductor Energy Laboratory Co Ltd filed Critical Semiconductor Energy Laboratory Co Ltd
Assigned to SEMICONDUCTOR ENERGY LABORATORY CO., LTD. reassignment SEMICONDUCTOR ENERGY LABORATORY CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMAZAKI, SHUNPEI, IKEDA, HISAO, YANAGISAWA, YUICHI
Publication of US20150145755A1 publication Critical patent/US20150145755A1/en
Priority to US15/428,327 priority Critical patent/US9864411B2/en
Application granted granted Critical
Publication of US9572268B2 publication Critical patent/US9572268B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
    • G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
    • G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
    • G06F1/1652—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being flexible, e.g. mimicking a sheet of paper, or rollable
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/001—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background
    • G09G3/003—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes using specific devices not provided for in groups G09G3/02 - G09G3/36, e.g. using an intermediate record carrier such as a film slide; Projection systems; Display of non-alphanumerical information, solely or in combination with alphanumerical information, e.g. digital display on projected diapositive as background to produce spatial visual effects
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
    • H01L27/3244—
    • H01L51/0097—
    • H01L51/5237—
    • H01L51/5262—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N13/00—Stereoscopic video systems; Multi-view video systems; Details thereof
    • H04N13/30—Image reproducers
    • H04N13/302—Image reproducers for viewing without the aid of special glasses, i.e. using autostereoscopic displays
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/85—Arrangements for extracting light from the devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/86—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K50/865—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. light-blocking layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/10—OLED displays
    • H10K59/12—Active-matrix OLED [AMOLED] displays
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/87—Passivation; Containers; Encapsulations
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/875—Arrangements for extracting light from the devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K77/00—Constructional details of devices covered by this subclass and not covered by groups H10K10/80, H10K30/80, H10K50/80 or H10K59/80
    • H10K77/10—Substrates, e.g. flexible substrates
    • H10K77/111—Flexible substrates
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/02—Flexible displays
    • H01L2251/5338—
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K2102/00—Constructional details relating to the organic devices covered by this subclass
    • H10K2102/301—Details of OLEDs
    • H10K2102/311—Flexible OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
    • H10K59/80—Constructional details
    • H10K59/8791—Arrangements for improving contrast, e.g. preventing reflection of ambient light
    • H10K59/8792—Arrangements for improving contrast, e.g. preventing reflection of ambient light comprising light absorbing layers, e.g. black layers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/521—

Definitions

  • One embodiment of the present invention relates to a display device, a semiconductor device, and a light-emitting device.
  • one embodiment of the present invention is not limited to the above technical field.
  • One embodiment of the invention disclosed in this specification and the like relates to an object, a method, and a manufacturing method.
  • one embodiment of the present invention relates to a process, a machine, manufacture, or a composition of matter.
  • examples of the technical field of one embodiment of the present invention disclosed in this specification include a display device, a semiconductor device, a light-emitting device, a power storage device, a storage device, an electronic device, a lighting device, an input device (e.g., a touch sensor), an output device, an input/output device (e.g., a touch panel), a driving method thereof, and a manufacturing method thereof
  • Physiological factors in recognition of objects as stereoscopic objects by humans are binocular parallax, convergence, focus slide, motion parallax, object size, spatial layout, contrast, shading, and the like.
  • a display device that displays a stereoscopic image using binocular disparity.
  • Such a display device is configured to display, on one screen, an image to be seen from the position of the left eye of a viewer (an image for left eye) and an image to be seen from the position of the right eye of the viewer (an image for right eye). The viewer sees the image for left eye with the left eye and the image for right eye with the right eye and is thus allowed to see a stereoscopic image.
  • a display device which displays an image for left eye and an image for right eye alternately on a screen in synchronization with a shutter provided in eyeglasses, whereby the left eye of a viewer is allowed to see only the image for left eye and the right eye of the viewer is allowed to see only the image for right eye.
  • the viewer can see a stereoscopic image.
  • a screen is divided into a plurality of regions for left eye and a plurality of regions for right eye (e.g., strip-like regions) arranged side by side.
  • a parallax barrier is provided to overlap with the boundaries of the regions.
  • an image for left eye and an image for right eye are displayed at the same time.
  • the regions for displaying the image for right eye are hidden from the left eye of a viewer and the regions for displaying the image for left eye are hidden from the right eye of the viewer; consequently, the left eye is allowed to see only the image for left eye and the right eye is allowed to see only the image for right eye.
  • the viewer can see a stereoscopic image.
  • Patent Document 1 a display device including a switchable parallax barrier for achieving switching between a two-dimensional image display mode and a stereoscopic image display mode is known (Patent Document 1).
  • a light-emitting element using an electroluminescence (hereinafter also referred to as EL) phenomenon is also known.
  • This light-emitting element is a self-luminous type; therefore, high contrast and high speed of response to an input signal are achieved.
  • a display device to which this light-emitting element is applied and which consumes low power, is manufactured in a simple process, and is easily adapted to the increase in definition and the size of a substrate is known (Patent Document 2).
  • a display device utilizing eyeglasses with shutters displays images for left eye and images for right eye alternately on a screen, which results in an increase in the frequency of image writing to a pixel portion in one frame period as compared with the case of displaying a two-dimensional image.
  • This requires a driver circuit which can be driven at high frequency and also increases the power consumption of the display device.
  • the number of pixels that contribute to image display for left eye and the number of pixels that contribute to image display for right eye in the horizontal direction of a pixel portion are reduced to half of the actual number, which prevents high-definition images from being displayed.
  • a display device can display a two-dimensional image that gives a viewer a strong sense of depth or stereoscopic effect instead of images with binocular disparity such as images for left eye and images for right eye.
  • Another object of one embodiment of the present invention is to provide a novel display device. Another object of one embodiment of the present invention is to provide a display device that gives a viewer a strong stereoscopic effect or sense of depth in a two-dimensional image. Another object of one embodiment of the present invention is to provide a display device that gives a viewer a natural stereoscopic effect or sense of depth in a two-dimensional image. Another object of one embodiment of the present invention is to provide a display device that gives a viewer less fatigue, and a strong stereoscopic effect or sense of depth in a two-dimensional image. Another object of one embodiment of the present invention is to provide a display device that gives a viewer less fatigue, and a natural stereoscopic effect or sense of depth in a two-dimensional image.
  • One embodiment of the present invention is a display device including a display portion having a curved surface.
  • the display portion may be bent in a horizontal direction.
  • the display portion may be bendable in a horizontal direction.
  • the display portion may be bent in a vertical direction.
  • the display portion may be bendable in a vertical direction.
  • the display portion may have a convex surface (a convex curved surface) on the display surface side.
  • the display portion may be able to have a convex surface on the display surface side.
  • the display portion may have a concave surface (a concave curved surface) on the display surface side.
  • the display portion may be able to have a concave surface on the display surface side.
  • a display device includes a frame portion, and a display portion which has a display surface on a frame portion side, which is located so as to be apart from the frame portion with a distance therebetween, and which has a curved surface.
  • the display portion overlaps with an opening of the frame portion, and an end portion of the display portion overlaps with the frame portion.
  • the distance between the frame portion and the display portion corresponds to a distance between the display surface of the display portion and the surface of the frame portion on a viewer side. That is, the distance between the frame portion and the display portion is the sum of the distance between the display surface of the display portion and the surface of the frame portion facing the display surface and the thickness of the frame portion itself (a distance between a surface of the frame portion facing the display surface and a surface of the frame portion on the viewer side). Even when the frame portion and the display portion are in contact with each other, the frame portion and the display portion are located so as to be apart from each other with a distance therebetween by the thickness of the frame portion.
  • a corner of an inner frame of the frame portion have curvature.
  • the corner of the inner frame of the frame portion have larger curvature than a corner of the display portion.
  • the curvature of the corner of the inner frame of the frame portion be variable.
  • the size of the inner frame of the frame portion be variable.
  • the frame portion be attachable and detachable freely.
  • the frame portion be curved.
  • a display device includes a display portion that can be curved, an arithmetic processing portion which is supplied with image data and which can supply a control signal, and a drive control portion which is supplied with the control signal and which can change the degree or the direction of a curvature of the display portion.
  • the arithmetic processing portion generates the control signal by analyzing the image data.
  • a display device includes a frame portion that can be curved, a display portion that can be curved, an arithmetic processing portion which is supplied with image data and which can supply a control signal, and a drive control portion which is supplied with the control signal and which can change the degrees or the directions of curvatures of the display portion and the frame portion.
  • the arithmetic processing portion generates the control signal by analyzing the image data.
  • the drive control portion may be able to change the degree of an inclination of the frame portion, the shape of the inner frame of the frame portion, or the like instead of or in addition to the degree or the direction of a curvature of the frame portion.
  • a display device includes a frame portion, a light-transmitting layer, and a display portion.
  • the light-transmitting layer includes a viewing surface and a convex surface opposite to each other.
  • the refractive index of the light-transmitting layer is higher than the refractive index of the air.
  • the display portion includes an end portion overlapping with the frame portion with the light-transmitting layer therebetween.
  • the display portion includes a portion overlapping with an opening of the frame portion and the light-transmitting layer.
  • a plurality of display elements capable of displaying an image toward the viewing surface are provided along the convex surface in the display portion.
  • the viewing surface may be a plane that intersects the convex surface at at least three points.
  • a viewer can have a strong stereoscopic effect or sense of depth in a two-dimensional image. According to one embodiment of the present invention, a viewer can have a natural stereoscopic effect or sense of depth in a two-dimensional image.
  • a novel display device can be provided.
  • a display device that gives a viewer a strong stereoscopic effect or sense of depth in a two-dimensional image can be provided.
  • a display device that gives a viewer a natural stereoscopic effect or sense of depth in a two-dimensional image can be provided.
  • a display device that gives a viewer less fatigue, and a strong stereoscopic effect or sense of depth in a two-dimensional image can be provided.
  • a display device that gives a viewer less fatigue, and a natural stereoscopic effect or sense of depth in a two-dimensional image can be provided.
  • FIGS. 1 A 1 , 1 A 2 , 1 B 1 , 1 B 2 , 1 C 1 , 1 C 2 , 1 D 1 , and 1 D 2 illustrate examples of a display device.
  • FIGS. 2 A 1 , 2 A 2 , and 2 B illustrate examples of a display device.
  • FIGS. 3A and 3B illustrate an example of a display device.
  • FIGS. 4A to 4F illustrate examples of a display device.
  • FIGS. 5A to 5C illustrate an example of a display device.
  • FIGS. 6A to 6G illustrate examples of a display device.
  • FIGS. 7A to 7D illustrate examples of a display device.
  • FIG. 8 illustrates an example of a display device.
  • FIGS. 9A to 9C illustrate examples of a display panel.
  • FIGS. 10A and 10B illustrate examples of a display panel.
  • FIGS. 11A and 11B illustrate an example of a display panel.
  • FIGS. 12A to 12C illustrate an example of a manufacturing method of a display panel.
  • FIGS. 13A to 13C illustrate an example of a manufacturing method of a display panel.
  • FIGS. 14A to 14C illustrate an example of a touch panel.
  • FIGS. 15A and 15B illustrate an example of a touch panel.
  • FIGS. 16A to 16C illustrate examples of a touch panel.
  • FIGS. 17A to 17C illustrate examples of a touch panel.
  • FIG. 18 shows results in Example 2.
  • FIGS. 19A and 19B show results in Example 3.
  • FIG. 20A shows results in Example 3, and FIG. 20B shows the amount of change in distance between a viewer and a display portion.
  • FIGS. 21A to 21D illustrate a display device in Example 4.
  • FIGS. 22A and 22B show results in Example 4.
  • FIG. 23 shows results in Example 4.
  • FIG. 24 shows results in Example 5.
  • FIGS. 25A to 25D illustrate an example of a display device.
  • FIGS. 26A to 26E illustrate an example of a display device.
  • FIGS. 27A and 27B show results in Example 3.
  • FIGS. 28A and 28B show results in Example 3.
  • FIGS. 1 A 1 to 1 D 2 FIGS. 2 A 1 to 2 B, FIGS. 3A and 3B , FIGS. 4A to 4F , FIGS. 5A to 5C , FIGS. 6A to 6G , FIGS. 7A to 7D ,
  • FIG. 8 FIGS. 25A to 25D , and FIGS. 26A to 26E .
  • One embodiment of the present invention is a display device including a display portion having a curved surface.
  • a viewer can have a strong stereoscopic effect or sense of depth in a displayed two-dimensional image of a bent display portion (a curved display portion) as compared with a smooth display portion.
  • the display portion may be bent in a horizontal direction or a vertical direction.
  • the display portion may have a convex surface (a convex curved surface) or a concave surface (a concave curved surface) on a display surface side (or on a viewer side).
  • the display portion may be flexible; for example, the display portion may be bendable in a horizontal direction or a vertical direction. Alternatively, the display portion may be able to have a convex surface or a concave surface on the display surface side.
  • the display portion may be controlled by a viewer himself/herself or may be automatically controlled by the display device or the display portion.
  • the display portion may be curved while reproducing an image.
  • the shape of the display portion may be constant while reproducing an image and bendable while not operating.
  • FIGS. 1 A 1 to 1 D 2 illustrate examples of the display device of one embodiment of the present invention. Note that in each display device in FIGS. 1 A 2 , 1 B 2 , 1 C 2 , and 1 D 2 , the display surface of the display device is located on a viewer side (a right eye 30 R and a left eye 30 L).
  • a display device 110 illustrated in FIGS. 1 A 1 and 1 A 2 includes a display portion 101 and a non-display portion 102 .
  • the display portion 101 is bent in a horizontal direction (here, in a major-axis direction of the display portion 101 ) and includes a convex surface (a convex curved surface) on a display surface side (a viewer side).
  • a display device 111 illustrated in FIGS. 1 B 1 and 1 B 2 includes a display portion 101 and a non-display portion 102 .
  • the display portion 101 is bent in a horizontal direction and includes a concave surface (a concave curved surface) on a display surface side (a viewer side).
  • a display device 112 illustrated in FIGS. 1 C 1 and 1 C 2 includes a display portion 101 and a non-display portion 102 .
  • the display portion 101 is bent in a vertical direction (here, in a minor-axis direction of the display portion 101 ) and includes a convex surface on a display surface side (a viewer side).
  • a display device 113 illustrated in FIGS. 1 D 1 and 1 D 2 includes a display portion 101 and a non-display portion 102 .
  • the display portion 101 is bent in a vertical direction and includes a concave surface on a display surface side (a viewer side).
  • a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image.
  • a stereoscopic effect or a sense of depth in a horizontal direction is stronger than that in a vertical direction (see Example 3 described later).
  • a stereoscopic effect or a sense of depth of a display device including a convex surface on a viewer side is stronger than that of a display device including a concave surface (see Example 3 described later).
  • the display device of one embodiment of the present invention may include the display portion 101 having a plurality of curved surfaces.
  • the display portion 101 is bent in a horizontal direction and includes a convex surface and a concave surface on a display surface side.
  • the display device of one embodiment of the present invention does not necessarily have a bend line which is parallel or perpendicular to a side of the display device or the display portion and may be bent in a diagonal direction.
  • a display device includes a frame portion, and a display portion which has a display surface on a frame portion side, which is located so as to be apart from the frame portion with a distance therebetween, and which has a curved surface.
  • the display portion overlaps with an opening of the frame portion, and an end portion of the display portion overlaps with the frame portion.
  • the display device of one embodiment of the present invention includes the frame portion between a viewer and the display portion, whereby the viewer has an optical illusion that the position of the display portion is different from actual one, stereoscopic information is corrected by brain, and thus the viewer can feel a stereoscopic effect or a sense of depth in a two-dimensional image.
  • the degree of a curvature or an inclination of the frame portion, the shape or the size of the opening of the frame portion, or the like is constant in the display device, a problem might be caused.
  • the way a viewer feels a stereoscopic effect or a sense of depth differs depending on a viewer, and an appropriate range of conditions such as the degree of a curvature or an inclination of the frame portion, the shape or the size of the opening of the frame portion, and the like might vary among individuals.
  • these conditions are not suitable for a viewer, the viewer cannot feel a stereoscopic effect or a sense of depth in a two-dimensional image easily in some cases even by viewing the display portion through the opening of the frame portion.
  • the intensity of a stereoscopic effect or a sense of depth might be changed without intent or might not be changed though intended to be changed.
  • the frame can be adjusted so that a viewer can feel a natural stereoscopic effect and can feel less fatigue.
  • a change of the intensity of a stereoscopic effect or a sense of depth without intent can be suppressed or the intensity of a stereoscopic effect or a sense of depth can be changed intentionally. Accordingly, in the display device of one embodiment of the present invention, a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image and can feel less fatigue.
  • the frame portion may be controlled by a viewer himself/herself or may be automatically controlled by the display device or the frame portion.
  • a curvature of the frame portion, an inclination of the frame portion, the shape of the opening of the frame portion, or the size of the frame portion may be changed while an image is reproduced.
  • the shape of the frame portion may be constant while reproducing an image and can be changed while not operating.
  • FIG. 3A A positional relation between the display portion and the frame portion of the display device of one embodiment of the present invention is described with a perspective view of a display device illustrated in FIG. 3A and a front view (a view viewed from the display surface side) and a top view of the display device illustrated in FIG. 3B .
  • the display device in FIGS. 3A and 3B includes a display portion 101 , a non-display portion 102 , and a frame portion 103 .
  • the display portion 101 includes a display surface on the frame portion 103 side.
  • the display portion 101 and the frame portion 103 are located so as to be apart from each other with a distance L therebetween.
  • the display portion 101 overlaps with an opening of the frame portion 103 , and an end portion of the display portion 101 overlaps with the frame portion 103 .
  • the display portion 101 has a curved surface. Although an example in which the display portion 101 is bent in a horizontal direction and has a convex surface on the display surface side is illustrated here, one embodiment of the present invention is not limited thereto.
  • the distance between the frame portion 103 and the display portion 101 corresponds to a distance between the display surface of the display portion 101 and the surface of the frame portion 103 on a viewer side. That is, the distance between the frame portion 103 and the display portion 101 is the sum of the distance between the display surface of the display portion 101 and the surface of the frame portion 103 facing the display surface and the thickness of the frame portion 103 itself (a distance between a surface of the frame portion 103 facing the display surface and a surface of the frame portion 103 on the viewer side). Even when the frame portion 103 and the display portion 101 are in contact with each other, the frame portion 103 and the display portion 101 are located so as to be apart from each other with a distance therebetween by the thickness of the frame portion 103 .
  • the distance L between the frame portion 103 and the display portion 101 is 1 mm or more, preferably 1 cm or more, further preferably 5 cm or more, in which case a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image.
  • the distance between the frame portion 103 and the display portion 101 differs depending on the position of the display portion 101 , such as the end portion or the center portion, the distance is at least greater than 0, preferably 1 mm or more in part of the display portion 101 .
  • the minimum distance between the display surface of the display portion 101 and the surface of the frame portion 103 on the viewer side is 1 cm or more, preferably 5 cm or more, in which case the viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image which is displayed on the entire surface of the display portion.
  • FIG. 3B illustrates the case where four sides of the display portion 101 overlap with the frame portion 103 .
  • at least part of the display portion 101 may overlap with the frame portion 103 .
  • only two opposite sides of the display portion 101 may overlap with the frame portion 103 .
  • FIG. 3B illustrates the case where a long side W 1 of the display portion 101 is longer than a long side W 2 of the opening of the frame portion 103 , and a short side of the display portion 101 is longer than a short side of the opening of the frame portion 103 .
  • a long side or a short side of the display portion 101 may be longer than that of the opening of the frame portion 103 , for example.
  • a viewer who faces the display surface of the display device can view 50% or more, preferably 70% or more, further preferably 90% or more of display in the display portion through the opening of the frame portion.
  • a viewer of the display device views a two-dimensional image (a still image or a moving image) displayed on the display portion 101 through the opening of the frame portion 103 .
  • the viewer can feel a strong stereoscopic effect or sense of depth in the two-dimensional image by viewing display in the display portion 101 through the opening of the frame portion 103 as compared with the case of viewing display in the display portion 101 without through the opening of the frame portion 103 .
  • the viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image even when viewing the display portion 101 with one eye.
  • the viewer can feel a stronger stereoscopic effect or sense of depth in a two-dimensional image by viewing the display portion 101 with both eyes and feeling a difference between information that comes into the right eye and information that comes into the left eye.
  • the frame portion 103 may be attachable and detachable freely.
  • the display device can be used without the frame portion 103 when display which does not require a stereoscopic effect or a sense of depth is made on the display portion 101 .
  • a plurality of attachable and detachable frame portions 103 whose openings differ in size, shape, or the like may be prepared and the frame portions 103 may be replaced with each other.
  • the frame portion may be attached to a display panel (the display portion), may store the display panel, or may be worn on the head of a viewer.
  • FIGS. 4A to 4F illustrate examples of the display device of one embodiment of the present invention.
  • the frame portion may be curved.
  • the frame portion may be bent in a horizontal direction or a vertical direction.
  • the frame portion may have a convex surface (a convex curved surface) or a concave surface (a concave curved surface) on a display surface side (or on a viewer side).
  • the frame portion may be flexible; for example, the frame portion may be bendable in a horizontal direction or a vertical direction. Alternatively, the frame portion may be able to have a convex surface or a concave surface on the display surface side.
  • a frame portion 103 illustrated in each of FIGS. 4A and 4B is bent in a horizontal direction (here, in a major-axis direction of the display portion 101 ) in a manner similar to that of a display portion 101 and includes a convex surface (a convex curved surface) on a viewer side.
  • the degree of a curvature of the display portion 101 may be the same as or different from that of a curvature of the frame portion 103 .
  • the display portion 101 and the frame portion 103 may be bent with the same curvature as illustrated in FIG. 4A , or the display portion 101 and the frame portion 103 may be bent with different curvatures as illustrated in FIG. 4B .
  • the bend line of the display portion 101 and the bend line of the frame portion 103 may overlap with each other or may not overlap with each other.
  • a frame portion 103 is bent in a horizontal direction, and a display portion 101 is bent in a vertical direction.
  • Each of the frame portion 103 and the display portion 101 has a convex surface on a viewer side.
  • a frame portion 103 is bent in a vertical direction, and a display portion 101 is bent in a horizontal direction.
  • Each of the frame portion 103 and the display portion 101 has a concave surface on a viewer side.
  • a frame portion 103 includes a concave surface on a viewer side, and a display portion 101 includes a convex surface on the viewer side.
  • Each of the frame portion 103 and the display portion 101 is bent in a horizontal direction.
  • FIGS. 4A to 4E illustrate examples in each of which the display portion 101 , the frame portion 103 , and a viewer (a right eye 30 R and a left eye 30 L) face one another
  • a viewer a right eye 30 R and a left eye 30 L
  • FIG. 4F a viewer (a right eye 30 R and a left eye 30 L) does not face a display portion 101 when seeing display in the display portion 101 through an opening of a frame portion 103 .
  • FIGS. 5A to 5C illustrate an example of the display device of one embodiment of the present invention.
  • FIG. 5A is a top view of a display device
  • FIG. 5B is a perspective view of the display device
  • FIG. 5C is a side view of the display device.
  • the display device in FIGS. 5A to 5C includes a display portion 101 having flexibility, a non-display portion 102 , and a plurality of driver portions 104 .
  • the driver portions 104 can be driven independently. The degree, the direction, or the like of a curvature of the display portion 101 can be adjusted in accordance with the lengths or the positions of the driver portions 104 attached to a structure body 20 .
  • the driver portions 104 may be movable in a vertical direction and a horizontal direction on the surface of the structure body 20 as indicated by arrows. Alternatively, the length of the driver portion 104 in a direction perpendicular to the surface of the structure body 20 may be variable. A contact between the driver portion 104 , and the display portion 101 or the non-display portion 102 may be moved.
  • the number of driver portions is not limited. In the case where there is a plurality of driver portions, the plurality of driver portions may be driven independently or at least part of the driver portions may be driven in synchronization with each other.
  • driver portions 104 may be attached to a member of the display device, or may be attached to a wall surface or a floor on which the display device is disposed. That is, the structure body 20 may be included or may not be included in the display device.
  • the display device in FIGS. 5A to 5C includes a processing portion 109 .
  • the degree, the direction, or the like of a curvature of the display portion 101 can be changed in accordance with the content of a moving image by having the processing portion 109 . Accordingly, such a case is preferable because a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image.
  • the display portion 101 may be transformed so as to have a convex surface on a viewer side.
  • FIG. 8 A structure example of the display device having the processing portion 109 is shown in FIG. 8 .
  • the processing portion 109 includes an arithmetic processing portion, a memory portion, and a drive control portion shown in FIG. 8 .
  • An image data displayed on the display portion 101 is supplied to the arithmetic processing portion.
  • the arithmetic processing portion generates a control signal by analyzing the supplied image data.
  • spectrum analysis content analysis
  • detection of expansion or movement zoom-in/zoom-out, pan tilt (panning), the speed of movement, the direction of movement, or the like
  • a control signal may be generated by analyzing the supplied audio data.
  • a control signal may be generated on the basis of the analysis results of both the image data and the audio data.
  • spectrum analysis content analysis
  • sound source analysis sound source analysis
  • separate extraction of music, human voice, or the like can be given.
  • data of the results are supplied to the arithmetic portion, in which case a control signal may be generated by analyzing the data.
  • a control signal generated by analyzing the data in the arithmetic processing portion is supplied from the arithmetic processing portion to the drive control portion. Then, the drive control portion transforms the display portion to have a curved surface suitable for a viewer on the basis of the control signal.
  • the viewer can select the intensity and existence of a stereoscopic effect, the degree of a curvature of the display portion, the degree of a curvature or an inclination of the frame portion, or the shape, the size, or the like of an inner frame of the frame portion, and a signal based on the selection may be supplied to the arithmetic processing portion.
  • a control signal based on the signal may be generated.
  • a control signal generated in the arithmetic processing portion is supplied to the drive control portion, and the frame portion can be controlled on the basis of the control signal.
  • the frame portion may be moved directly or may be moved indirectly by moving the driver portion.
  • FIGS. 6A to 6G illustrate examples of the shape of the inner frame of the frame portion in one embodiment of the present invention.
  • the shape of the inner frame of the frame portion 103 may be similar to or different from that of the display portion 101 .
  • the inner frame of the frame portion 103 may be in the shape of a rectangle, a polygon other than a rectangle, such as a trapezoid ( FIG. 6A ) or a hexagon ( FIG. 6B ), a circle, an ellipse ( FIG. 6C ), or the like.
  • the display portion 101 may be in the shape of a circle, an ellipse, a polygon other than a rectangle, or the like.
  • corners of the inner frame of the frame portion 103 preferably have curvature as illustrated in FIGS. 6C to 6E because a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image.
  • the corners of the inner frame of the frame portion 103 preferably have curvature because naturalness of a two-dimensional image is enhanced for the viewer in some cases.
  • the corners of the inner frame of the frame portion 103 preferably have larger curvature than the corners of the display portion 101 .
  • the curvature is preferably set such that a straight portion is included in a side of the inner frame of the frame portion 103 as illustrated in FIG. 6D and further preferably the curvature is set such that a straight portion is included in each side of the inner frame of the frame portion 103 as illustrated in FIG. 6E .
  • a frame portion in which the curvature of the corner of the inner frame is variable can be achieved with the use of an elastic material such as rubber.
  • an elastic material such as rubber.
  • a change of the intensity of a stereoscopic effect or a sense of depth without intent can be suppressed or the intensity of a stereoscopic effect or a sense of depth can be changed intentionally.
  • the position of the opening of the frame portion 103 may be moved as illustrated in FIG. 6F .
  • the size of the opening of the frame portion 103 may be variable as illustrated in FIG. 6G .
  • a change of the intensity of a stereoscopic effect or a sense of depth without intent can be suppressed or the intensity of a stereoscopic effect or a sense of depth can be changed intentionally.
  • the frame portion is not necessarily parallel to the display surface.
  • FIG. 7A illustrates the case where a distance between the frame portion 103 and the display portion 101 is wider at the right end than at the left end of the display portion
  • FIG. 7B illustrates the case where the distance between the frame portion 103 and the display portion 101 is wider at the lower end than at the upper end of the display portion.
  • a viewer can feel a stronger stereoscopic effect or sense of depth in a two-dimensional image when the frame portion 103 has an inclination with respect to the display surface.
  • the display device of one embodiment of the present invention has a frame portion, whereby glare of external light to the display portion can be suppressed.
  • glare of external light By suppressing glare of external light, not only color reproducibility of display is enhanced but also the viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image.
  • FIGS. 7C and 7D illustrate a display device of one embodiment of the present invention.
  • a display device illustrated in FIGS. 7C and 7D includes a frame portion and the display portion 101 having a curved surface.
  • the frame portion includes a first frame portion 103 a and a second frame portion 103 b .
  • the display portion 101 overlaps with an opening surrounded by the first frame portion 103 a and the second frame portion 103 b and end portions of the display portion 101 overlap with the first frame portion 103 a and the second frame portion 103 b.
  • the first frame portion 103 a and the second frame portion 103 b are moved by driver portions 104 a and 104 b so that the size of the inner frame of the frame portion can be changed.
  • a display device includes a frame portion, a light-transmitting layer, and a display portion.
  • the light-transmitting layer includes a viewing surface and a convex surface opposite to each other.
  • the refractive index of the light-transmitting layer is higher than that of the air.
  • the display portion includes an end portion overlapping with the frame portion with the light-transmitting layer provided therebetween and includes a portion overlapping with an opening of the frame portion and the light-transmitting layer.
  • a plurality of display elements capable of displaying an image toward the viewing surface are provided along the convex surface.
  • a display surface of the display portion is in contact with the convex surface of the light-transmitting layer in the display device according to the embodiment of the present invention.
  • a column with a bottom surface whose boundary consists of a curved line (a cylinder with a perfect circle-shaped bottom surface, an elliptic cylinder with an ellipse-shaped bottom surface, or the like), or a column with a bottom surface whose boundary consists of a curved line and a straight line (a column with a semi cylindrical-shaped bottom surface, a semi elliptical cylindrical-shaped bottom surface, or the like) can be given.
  • the convex surface corresponds to a curved surface of the column
  • the viewing surface corresponds to a surface opposite to the curved surface of the column.
  • the viewing surface may be a flat surface or a curved surface (a concave surface or a convex surface) or may partly have a curved surface (a convex portion or a concave portion).
  • the frame portion may be partly in contact with the display portion.
  • the frame portion may be partly in contact with the light-transmitting layer.
  • a virtual image is formed neither on the viewing surface of the display device nor on the display surface of the display portion but is formed in the light-transmitting layer because the refractive index of the light-transmitting layer is higher than that of the air. Accordingly, a misinterpretation by viewer's brain is caused and a stereoscopic effect or sense of depth to an image is increased.
  • the display elements are provided along the convex surface, the position of a virtual image formed in the display device in the thickness direction differs between an edge portion and a central portion of the viewing surface of the display device. This gives a further increased stereoscopic effect or sense of depth to an image.
  • the display device of the embodiment of the present invention includes both the light-transmitting layer and the frame portion, whereby the viewer has an optical illusion that the position of the display portion is different from actual one, stereoscopic information is corrected by brain, and thus the viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image.
  • FIGS. 25A and 25B are perspective views of a display device 116
  • FIGS. 25C and 25D are cross-sectional views taken along dashed-dotted line A 1 -B 1 in FIG. 25A
  • the display device 116 in FIGS. 25A to 25D includes the frame portion 103 , the light-transmitting layer 105 , and a display panel 120 .
  • the display panel 120 includes a display portion 101 and a non-display portion 102 as illustrated in FIG. 25B .
  • a viewing surface 21 of the light-transmitting layer 105 is a flat surface. Specifically, the viewing surface 21 is a plane that intersects the display panel 120 or the display portion 101 at at least three points. Furthermore, the viewing surface 21 is a plane that intersects a convex surface 22 at at least three points.
  • This refraction of light causes a virtual image to be formed at a position D that is neither on the display surface of the display panel 120 (here, a surface in contact with the convex surface 22 ) nor on a viewing surface of the display device 116 (here corresponding to the viewing surface 21 of the light-transmitting layer 105 ).
  • a plurality of display elements capable of displaying an image toward the viewing surface 21 are provided along the convex surface 22 . Therefore, the position of a virtual image formed in the display device 116 in the thickness direction differs between an edge portion and a central portion of the viewing surface of the display device. This gives a further increased sense of depth or stereoscopic effect to an image.
  • the display portion 101 preferably includes a first display element which satisfies the following conditions. Specifically, Y/X is greater than or equal to 0.1 and less than or equal to 1, preferably greater than or equal to 0.15 and less than or equal to 0.6, further preferably greater than or equal to 0.2 and less than or equal to 0.4, where X is a distance between the first display element and an intersection Q of a perpendicular line drawn to an outermost point E on the convex surface 22 with a plane intersecting the perpendicular line orthogonally and passing through the first display element, and Y is a distance between the intersection Q and the outermost point E.
  • the display device including the first display element a larger difference in the position of a virtual image formed in the display device 116 in the thickness direction is made between the edge portion and the central portion of the viewing surface of the display device.
  • the display device including the first display element is preferable because it is effective in increasing the sense of depth or stereoscopic effect in an image.
  • Y 1 /X 1 is greater than or equal to 0.1 and less than or equal to 1, preferably greater than or equal to 0.15 and less than or equal to 0.6, further preferably greater than or equal to 0.2 and less than or equal to 0.4, where X 1 is a distance between a given display element and an intersection Q 1 of a perpendicular line drawn to an outermost point E on the convex surface 22 with a plane intersecting the perpendicular line orthogonally and passing through the display element, and Y 1 is a distance between the intersection Q 1 and the outermost point E.
  • the display element may be located in an edge portion of the display portion.
  • the display device do not include a display element that makes the above value of Y/X greater than 1. If a display element of the display device makes the value of Y/X greater than 1, the thickness of the display device increases, which makes it difficult to reduce the thickness of the display device or an electronic device including the display device. In addition, the durability of the display element (a display unit or a display region including the display element) might be lowered.
  • the viewing surface of the display device 116 is quadrangular, the viewing surface may be in the shape of a polygon, a circle, an ellipse, or the like and is not particularly limited.
  • the display device it is preferable that at least part of the display surface of the display portion 101 be in contact with the convex surface of the light-transmitting layer 105 .
  • the whole display surface of the display portion 101 may be in contact with the convex surface of the light-transmitting layer 105 .
  • a display device 117 is illustrated in FIG. 26A .
  • part of the display surface of the display portion 101 is not in contact with the light-transmitting layer 105 .
  • the embodiment of the present invention is not limited to these structures and the viewing surface of the light-transmitting layer 105 does not necessarily intersect the display portion 101 at three points.
  • the viewing surface of the light-transmitting layer 105 may be a plane 19 that intersects the non-display portion 102 at at least three points as illustrated in FIG. 26A .
  • the viewing surface is not necessarily a flat surface.
  • a hard coat film, an anti-reflection film, a touch panel, or the like may be provided on the viewing surface 21 of the light-transmitting layer 105 .
  • the hard coat film has hardness higher than that of at least the light-transmitting layer 105 , and an inorganic insulating film such as a silicon nitride film can be used, for example.
  • an inorganic insulating film such as a silicon nitride film can be used, for example.
  • the anti-reflection film a film having surface irregularities at a regular pitch of approximately several hundred nanometers, such as a moth-eye structure, can be used, for example.
  • the touch panel any of various types such as a capacitive type, a resistive type, a surface acoustic wave type, an infrared ray type, and an optical type can be used.
  • FIG. 26B is a perspective view of a display device 118 .
  • FIG. 26C is a perspective view of a display device 119 .
  • FIGS. 26D and 26E are cross-sectional views taken along dashed-dotted line A 2 -B 2 in FIG. 26B .
  • the display device 118 and the display device 119 each include the frame portion 103 , the light-transmitting layer 105 , and the display panel 120 .
  • the viewing surface 21 of the light-transmitting layer 105 is a curved surface.
  • part of the viewing surface 21 of the light-transmitting layer 105 is a curved surface.
  • the viewing surface 21 of the display device 118 or 119 satisfies the following conditions. That is, a distance between a point N and a point P where the point N is a foot of a perpendicular line drawn from a point M on the convex surface 22 to a plane intersecting the display portion 101 (or the convex surface 22 ) at at least three points (or passing through a boundary line between the convex surface 22 and the viewing surface 21 ), and the point P is an intersection of the perpendicular line with the viewing surface 21 is largest when the point M is at the outermost point E.
  • 26D illustrates an example in which a distance L 2 between a foot N 2 of a perpendicular line drawn from an outermost point E and an intersection P 2 of the perpendicular line with the viewing surface 21 is larger than a distance L 1 between a foot N 1 of a perpendicular line drawn from a point M on the convex surface 22 and an intersection P 1 of the perpendicular line with the viewing surface 21 .
  • a virtual image can be formed at a position that is neither on a display surface of the display portion 101 nor on a viewing surface of the display device. A viewer sees this virtual image; thus, the display device gives a sense of depth or a stereoscopic effect to an image.
  • a plurality of display elements capable of displaying an image toward the viewing surface 21 are provided along the convex surface 22 . Therefore, the position of a virtual image formed in the display device in the thickness direction differs between an edge portion and a central portion of the viewing surface of the display device. This gives a further increased sense of depth or stereoscopic effect to an image.
  • the display portion 101 preferably includes a first display element which satisfies the conditions given above.
  • Y 2 /X 2 is greater than or equal to 0.1 and less than or equal to 1, preferably greater than or equal to 0.15 and less than or equal to 0.6, further preferably greater than or equal to 0.2 and less than or equal to 0.4, where X 2 is a distance between a given display element and an intersection Q 2 of a perpendicular line drawn to an outermost point E on the convex surface 22 with a plane intersecting the perpendicular line orthogonally and passing through the display element, and Y 2 is a distance between the intersection Q 2 and the outermost point E.
  • the light-transmitting layer is formed using a material having a light-transmitting property and having a refractive index higher than that of the atmosphere.
  • a material having a light-transmitting property and having a refractive index higher than that of the atmosphere For example, an organic resin such as a resin which is curable at room temperature (e.g., a two-component type resin), a light-curable resin, or a heat-curable resin can be used.
  • an organic resin such as a polyvinyl chloride (PVC) resin, an acrylic resin, a polyimide resin, an epoxy resin, a silicone resin, a polyvinyl butyral (PVB) resin, or an ethylene vinyl acetate (EVA) resin can be used.
  • a drying agent may be contained in the organic resin.
  • a material having a light-transmitting property and a high refractive index is preferably used.
  • a material having a refractive index higher than or equal to 1.6, preferably higher than or equal to 1.7 and less than or equal to 2.1 is used.
  • the material having a high refractive index include a resin containing bromine, a resin containing sulfur, and the like.
  • a sulfur-containing polyimide resin, an episulfide resin, a thiourethane resin, a brominated aromatic resin, or the like can be used.
  • PET polyethylene terephthalate
  • TAC triacetyl cellulose
  • the state of the light-transmitting layer is not particularly limited and may be solid (including a gel or the like) or liquid (including a sol or the like).
  • the light-transmitting layer may be detachable in the display device of the embodiment of the present invention.
  • the display panel can be transformed to fit the light-transmitting layer used.
  • the degree of the sense of depth or stereoscopic effect provided by one display device can be adjusted for every use.
  • the display device of one embodiment of the present invention may include at least a display portion capable of displaying an image in a plane.
  • an image in this specification may be either a still image or a moving image.
  • the display portion is not particularly limited as long as having a curved surface.
  • the display portion is preferably flexible, in which case the shape, curvature, or the like of the curved surface can be made variable.
  • sheet-like or plate-like members of paper, cloth, a resin film, wood, and the like on which various images such as a picture, a painting, and an illustration are displayed can be given.
  • the display portion may include a display element.
  • an EL element e.g., an EL element including organic and inorganic materials, an organic EL element, or an inorganic EL element
  • an LED e.g., a white LED, a red LED, a green LED, or a blue LED
  • a transistor a transistor which emits light in accordance with current
  • an electron emitter e.g., a liquid crystal element, electronic ink, an electrophoretic element, or the like
  • a display portion having an EL element an EL display or the like can be given.
  • a liquid crystal display e.g., a transmissive liquid crystal display, a semi-transmissive liquid crystal display, a reflective liquid crystal display, a direct-view liquid crystal display, a projection liquid crystal display
  • a display portion including electronic ink or electrophoretic element electronic paper or the like can be given.
  • the display portion is an organic EL display
  • a viewer tends to feel a strong stereoscopic effect or sense of depth in a two-dimensional image as compared with a liquid crystal display. Therefore, in one embodiment of the present invention, an organic EL display, in particular, a flexible organic EL display is preferably used for the display portion.
  • the display portion may be a screen on which an image is projected by a projection device.
  • non-display portion included in the display device of one embodiment of the present invention may include a driver circuit of a display element or a light-emitting element, or a sealing region, for example.
  • the opening of the frame portion may have at least a light-transmitting property that allows a viewer to see display in the display portion, or the opening may also be a space.
  • a plate, a film, or the like made of a material transmitting visible light, such as glass or resin, may overlap with the display portion.
  • the frame portion may be formed using a light-transmitting material such as ground glass or frosted glass.
  • the frame portion may have a light-blocking property that makes a viewer difficult to see the display portion through the frame portion or may be formed using a material that does not transmit visible light.
  • the frame portion is preferably formed using a flexible material, in which case the frame portion can be bent.
  • the frame portion may be black, white, blue, green, red, or the like. Black is preferable to enhance a viewer's sense of immersion in display content.
  • the display portion of the display device of one embodiment of the present invention or the display device of one embodiment of the present invention may be an electronic device such as television sets (also called TV or television receivers); monitors for computers or the like; digital photo frames; mobile phones (also called cellular phones or portable telephones); portable game machines; portable information terminals; audio playback devices; or large game machines such as pachinko machines. That is, according to one embodiment of the present invention, a frame portion may be added to an electronic device (corresponding to the display portion), or the frame portion may be included in an electronic device (corresponding to the display device). Alternatively, the above electronic device may include the display device of one embodiment of the present invention.
  • the display device of one embodiment of the present invention can be used in an amusement park (e.g., a game center, a theme park, or the like), a theater, a cinema, or the like.
  • an amusement park e.g., a game center, a theme park, or the like
  • a theater e.g., a cinema
  • a viewer in accordance with the content of attraction, a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image in such a manner that the frame portion is transformed, or the degree of a curvature or an inclination of the frame portion or the shape or the size of the opening of the frame portion is changed.
  • a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image with a display portion having a curved surface.
  • a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image with a frame portion between the viewer and the display portion.
  • a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image without variation among individuals or regardless of display content because the degree of a curvature of the display portion, the degree of a curvature or an inclination of the frame portion, or the shape or the size of an opening of the frame portion can be changed. Fatigue that a viewer feels can be reduced as compared with the case where a display portion which is not suitable for a viewer is used because the degree of a curvature can be adjusted by the viewer or the display device so that curvature suitable for the viewer can be obtained.
  • the display device of one embodiment of the present invention is one mode of an eye-friendly display device which is less likely to strain eyes.
  • technologies of displaying images with less eyestrain also referred to as a reducing eyestrain technology (REST) are employed.
  • FIG. 9A is a plan view of the light-emitting device
  • FIG. 9B is a cross-sectional view taken along dashed-dotted line X 1 -Y 1 in FIG. 9A .
  • the light-emitting device illustrated in FIG. 9B is a top-emission light-emitting device using a separate coloring method.
  • the light-emitting device in FIG. 9A includes a light-emitting portion 491 , a driver circuit portion 493 , and a flexible printed circuit (FPC) 495 .
  • An organic EL element and transistors included in the light-emitting portion 491 and the driver circuit portion 493 are sealed with a flexible substrate 420 , a flexible substrate 428 , and a bonding layer 407 .
  • the light-emitting device in FIG. 9B includes the flexible substrate 420 , a bonding layer 422 , an insulating layer 424 , a transistor 455 , an insulating layer 463 , an insulating layer 465 , an insulating layer 405 , an organic EL element 450 (a lower electrode 401 , an EL layer 402 , and an upper electrode 403 ), the bonding layer 407 , the flexible substrate 428 , and a conductive layer 457 .
  • the flexible substrate 428 , the bonding layer 407 , and the upper electrode 403 transmit visible light.
  • the transistor 455 and the organic EL element 450 are provided over the flexible substrate 420 with the bonding layer 422 and the insulating layer 424 provided therebetween.
  • the organic EL element 450 includes the lower electrode 401 over the insulating layer 465 , the EL layer 402 over the lower electrode 401 , and the upper electrode 403 over the EL layer 402 .
  • the lower electrode 401 is electrically connected to a source electrode or a drain electrode of the transistor 455 . It is preferable that the lower electrode 401 reflect visible light.
  • the end portion of the lower electrode 401 is covered with the insulating layer 405 .
  • the driver circuit portion 493 includes a plurality of transistors. In FIG. 9B , one of the transistors included in the driver circuit portion 493 is illustrated.
  • the conductive layer 457 is electrically connected to an external input terminal through which a signal (e.g., a video signal, a clock signal, a start signal, a reset signal, or the like) or a potential from the outside is transmitted to the driver circuit portion 493 .
  • a signal e.g., a video signal, a clock signal, a start signal, a reset signal, or the like
  • a potential from the outside is transmitted to the driver circuit portion 493 .
  • a signal e.g., a video signal, a clock signal, a start signal, a reset signal, or the like
  • the conductive layer 457 is preferably formed using the same material and the same step(s) as those of the electrode or the wiring in the light-emitting portion or the driver circuit portion.
  • the conductive layer 457 is formed using the same material and the same step(s) as those of the source electrode and the drain electrode of the transistor.
  • the insulating layer 463 has an effect of suppressing diffusion of impurities into a semiconductor included in the transistor.
  • an insulating film having a planarization function is preferably selected in order to reduce surface unevenness due to the transistor.
  • FIG. 9A is a plan view of the light-emitting device
  • FIG. 9C is a cross-sectional view taken along dashed-dotted line X 1 -Y 1 in FIG. 9A .
  • the light-emitting device illustrated in FIG. 9C is a bottom-emission light-emitting device using a color filter method.
  • the light-emitting device in FIG. 9C includes the flexible substrate 420 , the bonding layer 422 , the insulating layer 424 , a transistor 454 , the transistor 455 , the insulating layer 463 , a coloring layer 432 , the insulating layer 465 , a conductive layer 435 , an insulating layer 467 , the insulating layer 405 , the organic EL element 450 (the lower electrode 401 , the EL layer 402 , and the upper electrode 403 ), the bonding layer 407 , the flexible substrate 428 , and the conductive layer 457 .
  • the flexible substrate 420 , the bonding layer 422 , the insulating layer 424 , the insulating layer 463 , the insulating layer 465 , the insulating layer 467 , and the lower electrode 401 transmit visible light.
  • the switching transistor 454 , the current control transistor 455 , and the organic EL element 450 are provided over the flexible substrate 420 with the bonding layer 422 and the insulating layer 424 provided therebetween.
  • the organic EL element 450 includes the lower electrode 401 over the insulating layer 467 , the EL layer 402 over the lower electrode 401 , and the upper electrode 403 over the EL layer 402 .
  • the lower electrode 401 is electrically connected to the source electrode or the drain electrode of the transistor 455 with the conductive layer 435 provided therebetween.
  • the end portion of the lower electrode 401 is covered with the insulating layer 405 . It is preferable that the upper electrode 403 reflect visible light.
  • the light-emitting device includes the coloring layer 432 over the insulating layer 463 , with which the organic EL element 450 overlaps.
  • the driver circuit portion 493 includes a plurality of transistors. In FIG. 9C , two of the transistors included in the driver circuit portion 493 are illustrated.
  • the conductive layer 457 is electrically connected to an external input terminal through which a signal or a potential from the outside is transmitted to the driver circuit portion 493 .
  • an example in which the FPC 495 is provided as the external input terminal is described.
  • the conductive layer 457 is formed using the same material and the same step(s) as those of the conductive layer 435 is described.
  • the insulating layer 463 has an effect of suppressing diffusion of impurities into a semiconductor included in the transistor.
  • an insulating film having a planarization function is preferably selected in order to reduce surface unevenness due to the transistors and the wirings.
  • FIG. 9A is a plan view of the light-emitting device
  • FIG. 10A is a cross-sectional view taken along dashed-dotted line X 1 -Y 1 in FIG. 9A .
  • the light-emitting device illustrated in FIG. 10A is a top-emission light-emitting device using a color filter method.
  • the light-emitting device in FIG. 10A includes the flexible substrate 420 , the bonding layer 422 , the insulating layer 424 , the transistor 455 , the insulating layer 463 , the insulating layer 465 , the insulating layer 405 , an insulating layer 496 , the organic EL element 450 (the lower electrode 401 , the EL layer 402 , and the upper electrode 403 ), the bonding layer 407 , a light-blocking layer 431 , the coloring layer 432 , an overcoat 453 , an insulating layer 226 , a bonding layer 426 , the flexible substrate 428 , and the conductive layer 457 .
  • the flexible substrate 428 , the bonding layer 426 , the insulating layer 226 , the bonding layer 407 , and the upper electrode 403 transmit visible light.
  • the transistor 455 and the organic EL element 450 are provided over the flexible substrate 420 with the bonding layer 422 and the insulating layer 424 provided therebetween.
  • the organic EL element 450 includes the lower electrode 401 over the insulating layer 465 , the EL layer 402 over the lower electrode 401 , and the upper electrode 403 over the EL layer 402 .
  • the lower electrode 401 is electrically connected to the source electrode or the drain electrode of the transistor 455 .
  • the end portion of the lower electrode 401 is covered with the insulating layer 405 .
  • the insulating layer 496 is provided over the insulating layer 405 .
  • the space between the flexible substrate 420 and the flexible substrate 428 can be adjusted with the insulating layer 496 . It is preferable that the lower electrode 401 reflect visible light. Moreover, the light-emitting device includes the coloring layer 432 overlapping with the organic EL element 450 with the bonding layer 407 provided therebetween, and the light-blocking layer 431 overlapping with the insulating layer 405 with the bonding layer 407 provided therebetween.
  • the driver circuit portion 493 includes a plurality of transistors. In FIG. 10A , one of the transistors included in the driver circuit portion 493 is illustrated.
  • the conductive layer 457 is electrically connected to an external input terminal through which a signal or a potential from the outside is transmitted to the driver circuit portion 493 .
  • the FPC 495 is provided as the external input terminal.
  • the conductive layer 457 is formed using the same material and the same step(s) as those of the source electrode and the drain electrode of the transistor 455 is described.
  • a connector 497 over the insulating layer 226 is connected to the conductive layer 457 through an opening provided in the insulating layer 226 , the overcoat 453 , the bonding layer 407 , the insulating layer 465 , and the insulating layer 463 .
  • the connector 497 is connected to the FPC 495 .
  • the FPC 495 and the conductive layer 457 are electrically connected to each other with the connector 497 provided therebetween.
  • FIG. 11A is a plan view of the light-emitting device
  • FIG. 11B is a cross-sectional view taken along dashed-dotted line G 1 -G 2 in FIG. 11A
  • FIG. 10B illustrates a cross-sectional view of a modification example of the light-emitting device.
  • the light-emitting devices illustrated in FIG. 10B and 11B each include an element layer 1301 , a bonding layer 1305 , and a flexible substrate 1303 .
  • the element layer 1301 includes a flexible substrate 1401 , a bonding layer 1403 , an insulating layer 1405 , a plurality of transistors, a conductive layer 1357 , an insulating layer 1407 , an insulating layer 1409 , a plurality of light-emitting elements, an insulating layer 1411 , a bonding layer 1413 , an overcoat 1461 , a light-blocking layer 1457 , and an insulating layer 1455 .
  • FIG. 11B illustrates an example in which each light-emitting element overlaps with a coloring layer 1459 .
  • the coloring layer 1459 is provided to overlap with a light-emitting element 1430
  • the light-blocking layer 1457 is provided to overlap with the insulating layer 1411 .
  • the coloring layer 1459 and the light-blocking layer 1457 are covered with the overcoat 1461 .
  • the space between the light-emitting element 1430 and the overcoat 1461 is filled with the bonding layer 1413 .
  • the coloring layers may be provided so as to overlap with all light-emitting elements, or the coloring layer may be provided so as to overlap with part of the light-emitting elements as illustrated in FIG. 10B .
  • the coloring layer is not necessarily provided in the white sub-pixel. Accordingly, the amount of light absorbed by the coloring layer can be reduced, and thus, the power consumption of the light-emitting device can be reduced.
  • the conductive layer 1357 is electrically connected to an FPC 1308 via a connector 1415 .
  • the connector 1415 may be disposed in an opening provided in the flexible substrate 1303 , the bonding layer 1305 , and the like.
  • the connector 1415 may be disposed in an opening provided in the insulating film 1407 and the insulating layer 1409 over the flexible substrate 1401 .
  • the light-emitting element 1430 includes a lower electrode 1431 , an EL layer 1433 , and an upper electrode 1435 .
  • the lower electrode 1431 is electrically connected to a source electrode or a drain electrode of a transistor 1440 .
  • An end portion of the lower electrode 1431 is covered with the insulating layer 1411 .
  • the light-emitting element 1430 has a top emission structure.
  • the upper electrode 1435 has a light-transmitting property and transmits light emitted from the EL layer 1433 .
  • the light-emitting device includes a plurality of transistors in a light extraction portion 1304 and a driver circuit portion 1306 .
  • the transistor 1440 is provided over the insulating layer 1405 .
  • the insulating layer 1405 and the flexible substrate 1401 are attached to each other with the bonding layer 1403 .
  • the insulating layer 1455 and the flexible substrate 1303 are attached to each other with the bonding layer 1305 . It is preferable to use insulating films with a high gas barrier property as the insulating layer 1405 and the insulating layer 1455 , in which case an impurity such as moisture or oxygen can be prevented from entering the light-emitting element 1430 or the transistor 1440 , leading to improved reliability of the light-emitting device.
  • the light-emitting device in Structure Example 1-4 can be manufactured in the following manner: the insulating layer 1405 , the transistor 1440 , and the light-emitting element 1430 are formed over a formation substrate with high heat resistance; the formation substrate is peeled; and the insulating layer 1405 , the transistor 1440 , and the light-emitting element 1430 are transferred to the flexible substrate 1401 and bonded thereto with the bonding layer 1403 .
  • the light-emitting device in Structure Example 1-4 can be manufactured in the following manner: the insulating layer 1455 , the coloring layer 1459 , and the light-blocking layer 1457 are formed over a formation substrate with high heat resistance; the formation substrate is peeled; and the insulating layer 1455 , the coloring layer 1459 , and the light-blocking layer 1457 are transferred to the flexible substrate 1303 and bonded thereto with the bonding layer 1305 .
  • a material with high moisture permeability and low heat resistance e.g., resin
  • it is not allowed to expose the substrate to high temperature in the manufacturing process.
  • a transistor and the like can be formed over a formation substrate with high heat resistance; thus, a highly reliable transistor and an insulating film with a sufficiently high gas barrier property can be formed. Then, these are transferred to a flexible substrate and thus a highly reliable light-emitting device can be manufactured.
  • a thin and/or lightweight light-emitting device with high reliability can be provided. Details of the manufacturing method will be described later.
  • the flexible substrate 1303 and the flexible substrate 1401 are each preferably formed using a material with high toughness. In that case, a display device with high impact resistance that is less likely to be broken can be provided.
  • the flexible substrate 1303 is an organic resin substrate and the flexible substrate 1401 is a substrate of a thin metal material or a thin alloy material
  • the light-emitting device can be lightweight and unlikely to be broken as compared with the case where a glass substrate is used.
  • a metal material and an alloy material, which have high thermal conductivity, are preferable because they can easily conduct heat to the whole substrate and accordingly can prevent a local temperature rise in the light-emitting device.
  • the thickness of a substrate using a metal material or an alloy material is preferably greater than or equal to 10 ⁇ m and less than or equal to 200 ⁇ m, further preferably greater than or equal to 20 ⁇ m and less than or equal to 50 ⁇ m.
  • the flexible substrate 1401 may have a stacked-layer structure of a metal substrate and a layer with high thermal emissivity (e.g., the layer can be formed using a metal oxide or a ceramic material).
  • the element layer 1301 includes at least a light-emitting element.
  • a self-luminous element can be used, and an element whose luminance is controlled by current or voltage is included in the category of the light-emitting element.
  • a light-emitting diode (LED), an organic EL element, an inorganic EL element, or the like can be used.
  • the element layer 1301 may further include a transistor for driving the light-emitting element, a touch sensor, or the like.
  • the structure of the transistors in the light-emitting device is not particularly limited.
  • a forward staggered transistor or an inverted staggered transistor may be used.
  • a top-gate transistor or a bottom-gate transistor may be used.
  • a semiconductor material used for the transistors is not particularly limited; for example, silicon, germanium, an oxide semiconductor, or the like may be used.
  • a semiconductor material used for the transistors there is no particular limitation on the state of a semiconductor material used for the transistors, and an amorphous semiconductor or a semiconductor having crystallinity (a microcrystalline semiconductor, a polycrystalline semiconductor, a single crystal semiconductor, or a semiconductor partly including crystal regions) may be used. It is preferable that a semiconductor having crystallinity be particularly used, in which case deterioration of the transistor characteristics can be suppressed.
  • a polycrystalline semiconductor is preferably used for the transistors.
  • Polycrystalline silicon can be formed at a low temperature as compared with single crystal silicon and has a high field-effect mobility and high reliability as compared with amorphous silicon.
  • the aperture ratio of the pixel can be improved.
  • a gate driver circuit and a source diver circuit can be formed over the same substrate as a pixel and thus the number of components constituting an electronic device can be reduced.
  • an oxide semiconductor is preferably used for the transistors. It is preferable to use, for example, an oxide semiconductor having a wider band gap than silicon. A semiconductor material having a wider band gap and a lower carrier density than silicon is preferably used because off-state leakage current of the transistor can be reduced.
  • the oxide semiconductor preferably contains at least indium (In) or zinc (Zn), for example.
  • the transistor contains an oxide represented by an In—M—Zn-based oxide (M is a metal such as Al, Ti, Ga, Ge, Y, Zr, Sn, La, Ce, or Hf).
  • an “In—Ga—Zn-based oxide” means an oxide containing In, Ga, and Zn as its main components and there is no particular limitation on the ratio of In, Ga, and Zn.
  • the In—Ga—Z-based oxide may contain another metal element in addition to In, Ga, and Zn.
  • An oxide semiconductor film is classified into a single crystal oxide semiconductor film and a non-single-crystal oxide semiconductor film.
  • the non-single-crystal oxide semiconductor film includes any of a c-axis aligned crystalline oxide semiconductor (CAAC-OS) film, a polycrystalline oxide semiconductor film, a microcrystalline oxide semiconductor film, an amorphous oxide semiconductor film, and the like.
  • CAAC-OS c-axis aligned crystalline oxide semiconductor
  • the CAAC-OS film is one of oxide semiconductor films having a plurality of c-axis aligned crystal parts.
  • a CAAC-OS film can be referred to as an oxide semiconductor film including c-axis aligned nanocrystals (CANC).
  • an oxide semiconductor film including a plurality of crystal parts whose c-axes are aligned perpendicular to a surface on which the semiconductor layer is formed or the top surface of the semiconductor layer and in which the adjacent crystal parts have no grain boundary. Since such an oxide semiconductor does not have a grain boundary, stress that is caused by curving a flexible device which is formed by employing one embodiment of the present invention does not generate a crack in an oxide semiconductor film. Therefore, such an oxide semiconductor can be preferably used for a device which has flexibility and used in a curved state.
  • the use of such a material for the semiconductor layer makes it possible to provide a highly reliable transistor in which a change in the electrical characteristics is suppressed.
  • the light-emitting element included in the light-emitting device includes a pair of electrodes (the lower electrode 1431 and the upper electrode 1435 ), and the EL layer 1433 between the pair of electrodes.
  • One of the pair of electrodes functions as an anode and the other functions as a cathode.
  • the light-emitting element may have any of a top emission structure, a bottom emission structure, and a dual emission structure.
  • a conductive film that transmits visible light is used as the electrode through which light is extracted.
  • a conductive film that reflects visible light is preferably used as the electrode through which light is not extracted.
  • the conductive film that transmits visible light can be formed using, for example, indium oxide, indium tin oxide (ITO), indium zinc oxide, zinc oxide, or zinc oxide to which gallium is added.
  • a film of a metal material such as gold, silver, platinum, magnesium, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, palladium, or titanium; an alloy containing any of these metal materials; or a nitride of any of these metal materials (e.g., titanium nitride) can be formed thin so as to have a light-transmitting property.
  • a stack of any of the above materials can be used as the conductive layer.
  • a stacked film of ITO and an alloy of silver and magnesium is preferably used, in which case conductivity can be increased.
  • graphene or the like may be used.
  • a metal material such as aluminum, gold, platinum, silver, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, or palladium or an alloy including any of these metal materials can be used.
  • Lanthanum, neodymium, germanium, or the like may be added to the metal material or the alloy.
  • an alloy containing aluminum such as an alloy of aluminum and titanium, an alloy of aluminum and nickel, or an alloy of aluminum and neodymium; or an alloy containing silver such as an alloy of silver and copper, an alloy of silver, copper, and palladium, or an alloy of silver and magnesium can be used for the conductive film.
  • An alloy of silver and copper is preferable because of its high heat resistance.
  • a metal film or a metal oxide film is stacked on an aluminum alloy film, whereby oxidation of the aluminum alloy film can be suppressed.
  • a material for the metal film or the metal oxide film are titanium, titanium oxide, and the like.
  • the conductive film that transmits visible light and a film containing any of the above metal materials may be stacked.
  • a stacked film of silver and ITO or a stacked film of an alloy of silver and magnesium and ITO can be used.
  • Each of the electrodes may be formed by an evaporation method or a sputtering method.
  • a discharging method such as an ink-jet method, a printing method such as a screen printing method, or a plating method may be used.
  • the EL layer includes at least a light-emitting layer.
  • the EL layer may further include one or more layers containing any of a substance with a high hole-injection property, a substance with a high hole-transport property, a hole-blocking material, a substance with a high electron-transport property, a substance with a high electron-injection property, a substance with a bipolar property (a substance with a high electron- and hole-transport property), and the like.
  • Either a low molecular compound or a high molecular compound can be used for the EL layer, and an inorganic compound may also be used.
  • Each of the layers included in the EL layer 1433 can be formed by any of the following methods: an evaporation method (including a vacuum evaporation method), a transfer method, a printing method, an ink-jet method, a coating method, and the like.
  • the light-emitting element is preferably provided between a pair of insulating films with high gas barrier properties.
  • an impurity such as water can be prevented from entering the light-emitting element, leading to prevention of a decrease in the reliability of the light-emitting device.
  • a film containing nitrogen and silicon such as a silicon nitride film or a silicon nitride oxide film, a film containing nitrogen and aluminum, such as an aluminum nitride film, or the like can be used.
  • a silicon oxide film, a silicon oxynitride film, an aluminum oxide film, or the like can be used.
  • the permeation amount of water vapor of the insulating film with a high gas barrier property is lower than or equal to 1 ⁇ 10 ⁇ 5 [g/m 2 .day], preferably lower than or equal to 1 ⁇ 10 ⁇ 6 [g/m 2 .day], further preferably lower than or equal to 1 ⁇ 10 ⁇ 7 [g/m 2 ⁇ day], still further preferably lower than or equal to 1 ⁇ 10 ⁇ 8 [g/m 2 ⁇ day].
  • a flexible material is used for the flexible substrate.
  • an organic resin or a glass material that is thin enough to have flexibility can be used.
  • a material which transmits visible light is used for the substrate of the light-emitting device from which light is extracted.
  • a metal substrate or the like may be used in the case where the flexible substrate does not necessarily transmit visible light.
  • An organic resin which has a specific gravity smaller than that of glass, is preferably used for the flexible substrate, in which case the light-emitting device can be more lightweight as compared to the case where glass is used.
  • polyester resins such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN), a polyacrylonitrile resin, a polyimide resin, a polymethyl methacrylate resin, a polycarbonate (PC) resin, a polyethersulfone (PES) resin, a polyamide resin, a cycloolefin resin, a polystyrene resin, a polyamide imide resin, and a polyvinyl chloride resin.
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PES polyethersulfone
  • a material whose coefficient of thermal expansion is low is preferable, and for example, a polyamide imide resin, a polyimide resin, or PET can be suitably used.
  • a substrate in which a fibrous body is impregnated with a resin (also referred to as prepreg) or a substrate whose coefficient of thermal expansion is reduced by mixing an organic resin with an inorganic filler can also
  • a high-strength fiber of an organic compound or an inorganic compound is used as the fibrous body.
  • a high-strength fiber is specifically a fiber with a high tensile modulus of elasticity or a fiber with a high Young's modulus.
  • Typical examples of a high-strength fiber include a polyvinyl alcohol based fiber, a polyester based fiber, a polyamide based fiber, a polyethylene based fiber, an aramid based fiber, a polyparaphenylene benzobisoxazole fiber, a glass fiber, and a carbon fiber.
  • glass fiber using E glass, S glass, D glass, Q glass, or the like can be used. These fibers may be used in a state of a woven fabric or a nonwoven fabric, and a structure in which this fibrous body is impregnated with a resin and the resin is cured may be used as the flexible substrate.
  • the structure including the fibrous body and the resin is preferably used as the flexible substrate, in which case reliability against bending or breaking due to local pressure can be increased.
  • the refractive index of the material having flexibility and a light-transmitting property is preferably high.
  • a substrate obtained by dispersing an inorganic filler having a high refractive index into an organic resin can have a higher refractive index than the substrate formed of only the organic resin.
  • an inorganic filler having a particle diameter as small as 40 nm or less is preferable, in which case such a filler can maintain optical transparency.
  • the thickness of a metal substrate is preferably greater than or equal to 10 ⁇ m and less than or equal to 200 ⁇ m, further preferably greater than or equal to 20 ⁇ m and less than or equal to 50 ⁇ m. Since a metal substrate has a high thermal conductivity, heat generated due to light emission of a light-emitting element can be efficiently released.
  • metal substrate aluminum, copper, nickel, a metal alloy such as an aluminum alloy or stainless steel.
  • the flexible substrate may have a stacked-layer structure in which a hard coat layer (such as a silicon nitride layer) by which a surface of a light-emitting device is protected from damage, a layer (such as an aramid resin layer) which can disperse pressure, or the like is stacked over a layer of any of the above-mentioned materials. Furthermore, to suppress a decrease in the lifetime of the functional element (in particular, the organic EL element) due to moisture and the like, an insulating film with low water permeability described later may be included.
  • a hard coat layer such as a silicon nitride layer
  • a layer such as an aramid resin layer
  • an insulating film with low water permeability described later may be included.
  • the flexible substrate may be formed by stacking a plurality of layers.
  • a barrier property against water and oxygen can be improved and thus a highly reliable light-emitting device can be provided.
  • a flexible substrate in which a glass layer, a bonding layer, and an organic resin layer are stacked from the side closer to an organic EL element can be used.
  • the thickness of the glass layer is greater than or equal to 20 ⁇ m and less than or equal to 200 ⁇ m, preferably greater than or equal to 25 ⁇ m and less than or equal to 100 ⁇ m. With such a thickness, the glass layer can have both a high barrier property against water and oxygen and a high flexibility.
  • the thickness of the organic resin layer is greater than or equal to 10 ⁇ m and less than or equal to 200 ⁇ m, preferably greater than or equal to 20 ⁇ m and less than or equal to 50 ⁇ m.
  • the substrate that includes such a composite material of a glass material and an organic resin, a highly reliable and flexible light-emitting device can be provided.
  • various curable adhesives such as a reactive curable adhesive, a thermosetting adhesive, an anaerobic adhesive, and a photo curable adhesive such as an ultraviolet curable adhesive can be used.
  • these adhesives include an epoxy resin, an acrylic resin, a silicone resin, a phenol resin, a polyimide resin, an imide resin, a polyvinyl chloride (PVC) resin, a polyvinyl butyral (PVB) resin, an ethylene vinyl acetate (EVA) resin, and the like.
  • a material with low moisture permeability such as an epoxy resin, is preferable.
  • a two-component-mixture-type resin may be used.
  • an adhesive sheet or the like may be used.
  • the resin may include a drying agent.
  • a substance that adsorbs moisture by chemical adsorption such as oxide of an alkaline earth metal (e.g., calcium oxide or barium oxide)
  • an alkaline earth metal e.g., calcium oxide or barium oxide
  • a substance that adsorbs moisture by physical adsorption such as zeolite or silica gel
  • the drying agent is preferably included, in which case it can suppress entry of impurities such as moisture into the functional element and can improve the reliability of the light-emitting device.
  • a filler with a high refractive index or light-scattering member into the resin, in which case the efficiency of light extraction from the light-emitting element can be improved.
  • a filler with a high refractive index or light-scattering member into the resin, in which case the efficiency of light extraction from the light-emitting element can be improved.
  • titanium oxide, barium oxide, zeolite, zirconium, or the like can be used.
  • the insulating layer 424 , the insulating layer 226 , the insulating layer 1405 , and the insulating layer 1455 can each be formed using an inorganic insulating material. It is particularly preferable to use the insulating film with a high gas barrier property, in which case a highly reliable light-emitting device can be provided. In addition, the insulating film with a high gas barrier property may be formed between the bonding layer and the upper electrode.
  • the insulating layer 463 and the insulating layer 1407 each have an effect of suppressing diffusion of impurities into a semiconductor included in the transistor.
  • an inorganic insulating film such as a silicon oxide film, a silicon oxynitride film, or an aluminum oxide film can be used.
  • an insulating film with a planarization function is preferably selected in order to reduce surface unevenness due to the transistor or the like.
  • an organic material such as a polyimide resin, an acrylic resin, or a benzocyclobutene-based resin can be used.
  • a low-dielectric constant material a low-k material
  • a plurality of insulating films formed of these materials or inorganic insulating films may be stacked.
  • the insulating layer 405 and the insulating layer 1411 are provided to cover an end portion of the lower electrode.
  • a resin or an inorganic insulating material can be used as a material for each of the insulating layer 405 , the insulating layer 496 , and the insulating layer 1411 .
  • the resin for example, a polyimide resin, a polyamide resin, an acrylic resin, a siloxane resin, an epoxy resin, a phenol resin, or the like can be used.
  • a negative photosensitive resin or a positive photosensitive resin is preferably used for easy formation of the insulating layer 405 , the insulating layer 496 , and the insulating layer 1411 .
  • a photolithography method e.g., a sputtering method, an evaporation method, a droplet discharging method (e.g., an ink jetmethod), a printing method (e.g., a screen printing method or an off-set printing method), or the like may be used.
  • a photolithography method e.g., a sputtering method, an evaporation method, a droplet discharging method (e.g., an ink jetmethod), a printing method (e.g., a screen printing method or an off-set printing method), or the like may be used.
  • the conductive layers serving as an electrode, a wiring, and the like of the transistor can be each formed to have a single-layer structure or a stacked-layer structure using any of metal materials such as molybdenum, titanium, chromium, tantalum, tungsten, aluminum, copper, neodymium, and scandium, and an alloy material containing any of these elements.
  • Each of the conductive layers may be formed using a conductive metal oxide.
  • indium oxide e.g., In 2 O 3
  • tin oxide e.g., SnO 2
  • zinc oxide ZnO
  • ITO indium zinc oxide
  • indium zinc oxide e.g., In 2 O 3 —ZnO
  • any of these metal oxide materials in which silicon oxide is contained can be used.
  • the connector it is possible to use a paste-like or sheet-like material which is obtained by mixture of metal particles and a thermosetting resin and for which anisotropic electric conductivity is provided by thermocompression bonding.
  • the metal particles particles in which two or more kinds of metals are layered, for example, nickel particles coated with gold are preferably used.
  • the coloring layer is a colored layer that transmits light in a specific wavelength range.
  • a red (R) color filter for transmitting light in a red wavelength range a green (G) color filter for transmitting light in a green wavelength range, a blue (B) color filter for transmitting light in a blue wavelength range, or the like can be used.
  • Each coloring layer is formed in a desired position with any of various materials by a printing method, an ink-jet method, an etching method using a photolithography method, or the like.
  • the light-blocking layer is provided between the adjacent coloring layers.
  • the light-blocking layer blocks light emitted from an adjacent organic EL element to prevent color mixture between adjacent organic EL elements.
  • the coloring layer is provided such that its end portion overlaps with the light-blocking layer, whereby light leakage can be reduced.
  • a material that can block light from the organic EL element can be used; for example, a black matrix may be formed using a resin material containing a metal material, pigment, or dye. Note that it is preferable to provide the light-blocking layer in a region other than the light-emitting portion, such as a driver circuit portion, in which case undesired leakage of guided light or the like can be suppressed.
  • an overcoat covering the coloring layer and the light-blocking layer may be provided.
  • the overcoat is formed with a material that transmits light emitted from the organic EL element; for example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, an organic insulating film such as an acrylic film or a polyimide film can be used, and further, a stacked-layer structure of an organic insulating film and an inorganic insulating film may be employed.
  • a material that has high wettability with respect to the material of the bonding layer is preferably used as the material of the overcoat.
  • an oxide conductive film such as an ITO film or a metal film such as an Ag film which is thin enough to transmit light is preferably used as the overcoat 453 (see FIG. 10A ).
  • FIGS. 12A to 12C and FIGS. 13A to 13C an example of a manufacturing method of a light-emitting device is described with reference to FIGS. 12A to 12C and FIGS. 13A to 13C .
  • the manufacturing method is described using the light-emitting device of Structure Example 1-4 ( FIG. 11B ) as an example.
  • a peeling layer 1503 is formed over a formation substrate 1501 , and the insulating layer 1405 is formed over the peeling layer 1503 .
  • the plurality of transistors, the conductive layer 1357 , the insulating layer 1407 , the insulating layer 1409 , the plurality of light-emitting elements, and the insulating layer 1411 are formed over the insulating layer 1405 .
  • An opening is formed in the insulating layer 1411 , the insulating layer 1409 , and the insulating layer 1407 to expose the conductive layer 1357 ( FIG. 12A ).
  • a peeling layer 1507 is formed over a formation substrate 1505 , and the insulating layer 1455 is formed over the peeling layer 1507 .
  • the light-blocking layer 1457 , the coloring layer 1459 , and the overcoat 1461 are formed over the insulating layer 1455 (see FIG. 12B ).
  • the formation substrate 1501 and the formation substrate 1505 can each be a glass substrate, a quartz substrate, a sapphire substrate, a ceramic substrate, a metal substrate, or the like.
  • a glass material such as aluminosilicate glass, aluminoborosilicate glass, or barium borosilicate glass can be used.
  • a substrate having a strain point of 730° C. or higher is preferably used.
  • crystallized glass or the like may be used.
  • an insulating film such as a silicon oxide film, a silicon oxynitride film, a silicon nitride film, or a silicon nitride oxide film is preferably formed between the formation substrate and the peeling layer, in which case contamination from the glass substrate can be prevented.
  • the peeling layer 1503 and the peeling layer 1507 each have a single-layer structure or a stacked-layer structure containing an element selected from tungsten, molybdenum, titanium, tantalum, niobium, nickel, cobalt, zirconium, zinc, ruthenium, rhodium, palladium, osmium, iridium, and silicon; an alloy material containing any of the elements; or a compound material containing any of the elements.
  • a crystal structure of a layer containing silicon may be amorphous, microcrystal, or polycrystal.
  • the peeling layer can be formed by a sputtering method, a plasma CVD method, a coating method, a printing method, or the like.
  • a coating method includes a spin coating method, a droplet discharge method, and a dispensing method.
  • a tungsten layer, a molybdenum layer, or a layer containing a mixture of tungsten and molybdenum is preferably formed.
  • a layer containing an oxide or an oxynitride of tungsten, a layer containing an oxide or an oxynitride of molybdenum, or a layer containing an oxide or an oxynitride of a mixture of tungsten and molybdenum may be formed.
  • a mixture of tungsten and molybdenum is an alloy of tungsten and molybdenum, for example.
  • the layer containing an oxide of tungsten may be formed as follows: the layer containing tungsten is formed first and an insulating film formed of an oxide is formed thereover, so that the layer containing an oxide of tungsten is formed at the interface between the tungsten layer and the insulating film.
  • the layer containing an oxide of tungsten may be formed by performing thermal oxidation treatment, oxygen plasma treatment, nitrous oxide (N 20 ) plasma treatment, treatment with a highly oxidizing solution such as ozone water, or the like on the surface of the layer containing tungsten.
  • Plasma treatment or heat treatment may be performed in an atmosphere of oxygen, nitrogen, or nitrous oxide alone, or a mixed gas of any of these gasses and another gas.
  • Surface condition of the peeling layer is changed by the plasma treatment or heat treatment, whereby adhesion between the peeling layer and the insulating film formed later can be controlled.
  • the insulating layer can be formed by a sputtering method, a plasma CVD method, a coating method, a printing method, or the like.
  • the insulating layer is formed at a temperature higher than or equal to 250° C. and lower than or equal to 400° C. by a plasma CVD method, whereby the insulating layer can be a dense film having an extremely high gas barrier property.
  • a material for the bonding layer 1413 is applied to a surface of the formation substrate 1505 over which the coloring layer 1459 and the like are formed or a surface of the formation substrate 1501 over which the light-emitting element 1430 and the like are formed, and the surfaces are bonded to each other with the bonding layer 1413 provided therebetween ( FIG. 12C ).
  • the formation substrate 1501 is peeled, and the exposed insulating layer 1405 and the flexible substrate 1401 are attached to each other with the bonding layer 1403 . Furthermore, the formation substrate 1505 is peeled, and the exposed insulating layer 1455 and the flexible substrate 1303 are attached to each other with the bonding layer 1305 . Although the flexible substrate 1303 does not overlap with the conductive layer 1357 in FIG. 13A , the flexible substrate 1303 may overlap with the conductive layer 1357 .
  • peeling methods can be used for peeling of the formation substrate in one embodiment of the present invention.
  • a layer including a metal oxide film is formed as the peeling layer on the side in contact with the layer to be peeled
  • the metal oxide film is embrittled by crystallization, whereby the layer to be peeled can be peeled from the formation substrate.
  • an amorphous silicon film containing hydrogen is formed as the peeling layer between a formation substrate having high heat resistance and a layer to be peeled, the amorphous silicon film is removed by laser light irradiation or etching, whereby the layer to be peeled can be peeled from the formation substrate.
  • the metal oxide film is embrittled by crystallization, and part of the peeling layer is removed by etching using a solution or a fluoride gas such as NF 3 , BrF 3 , or ClF 3 , whereby the peeling can be performed at the embrittled metal oxide film.
  • a fluoride gas such as NF 3 , BrF 3 , or ClF 3
  • a method performed as follows may be employed: a film containing nitrogen, oxygen, hydrogen, or the like (e.g., an amorphous silicon film containing hydrogen, an alloy film containing hydrogen, an alloy film containing oxygen, or the like) is used as the peeling layer, and the peeling layer is irradiated with laser light to release the nitrogen, oxygen, or hydrogen contained in the peeling layer as gas, thereby promoting peeling between the layer to be peeled and the formation substrate.
  • the formation substrate provided with the layer to be peeled is removed mechanically or by etching using a solution or a fluoride gas such as NF 3 , BrF 3 , or ClF 3 , or the like. In this case, the peeling layer is not necessarily provided.
  • peeling can be performed easily.
  • peeling can be performed with physical force (by a machine or the like) after performing laser light irradiation, etching on the peeling layer with a gas, a solution, or the like, or mechanical removal with a sharp knife, scalpel or the like so that the peeling layer and the layer to be peeled can be easily separated from each other.
  • Peeling of the layer to be peeled from the formation substrate may be performed by soaking the interface between the peeling layer and the layer to be peeled in a liquid. Further alternatively, the peeling may be performed while pouring a liquid during the peeling. Furthermore, an adverse effect on the functional element included in the layer to be peeled due to static electricity caused at peeling (e.g., a phenomenon in which a semiconductor element is damaged by static electricity) can be suppressed.
  • a liquid may be sprayed in an atomized form or in a vaporized form.
  • pure water, an organic solvent, a neutral, alkaline, or acid aqueous solution, an aqueous solution in which a salt is dissolved, or the like can be used.
  • the peeling layer is formed using tungsten, it is preferable that the peeling be performed while etching the peeling layer using a mixed solution of ammonium water and a hydrogen peroxide solution.
  • the peeling layer is not necessarily provided in the case where peeling at an interface between the formation substrate and the layer to be peeled is possible.
  • a glass substrate is used as the formation substrate, and an organic resin such as polyimide, polyester, polyolefin, polyamide, polycarbonate, or acrylic is formed in contact with the glass substrate.
  • adhesion between the formation substrate and the organic resin is improved by laser light irradiation or heat treatment.
  • an insulating film, a transistor, and the like are formed over the organic resin.
  • peeling at the interface between the formation substrate and the organic resin can be performed by performing laser light irradiation with higher energy density higher than the above laser light irradiation or performing heat treatment at a higher temperature than the above heat treatment.
  • the interface between the formation substrate and the organic resin may be soaked in a liquid to be separated when peeled.
  • the insulating film, the transistor, and the like are formed over the organic resin having low heat resistance in the above method, it is impossible to expose the substrate to high temperatures in the manufacturing process.
  • a manufacturing process at high temperatures is dispensable for a transistor including an oxide semiconductor; therefore, the transistor can be favorably formed over the organic resin.
  • the organic resin may be used as the substrate of the light-emitting device.
  • the organic resin may be removed and another substrate may be attached to the exposed surface of the layer to be peeled using an adhesive.
  • peeling at the interface between a metal layer and the organic resin may be performed in the following manner: the metal layer is provided between the formation substrate and the organic resin and current is made to flow in the metal layer so that the metal layer is heated.
  • an opening is formed in the insulating layer 1455 and the bonding layer 1413 to expose the conductive layer 1357 ( FIG. 13B ).
  • the opening is formed also in the flexible substrate 1303 and the bonding layer 1305 ( FIG. 13C ).
  • the method for forming the opening is not particularly limited and may be, for example, a laser ablation method, an etching method, an ion beam sputtering method, or the like.
  • a slit may be made in a film over the conductive layer 1357 with a sharp knife or the like and part of the film may be peeled by physical force.
  • the light-emitting device can be manufactured.
  • a display element a display device which is a device including a display element, a light-emitting element, and a light-emitting device which is a device including a light-emitting element can employ various modes or can include various elements.
  • Examples of a display element, a display device, a light-emitting element, or a light-emitting device include a display medium whose contrast, luminance, reflectance, transmittance, or the like is changed by electromagnetic action, such as an EL element (e.g., an EL element including organic and inorganic materials, an organic EL element, or an inorganic EL element), an LED (e.g., a white LED, a red LED, a green LED, or a blue LED), a transistor (a transistor that emits light depending on current), an electron emitter, a liquid crystal element, electronic ink, an electrophoretic element, a grating light valve (GLV), a plasma display panel (PDP), a micro electro mechanical system (MEMS), a digital micromirror device (DMD), a digital micro shutter (DMS), interferometric modulator (IMOD) element, an electrowetting element, a piezoelectric ceramic display, or a carbon nanotube.
  • an active matrix method in which an active element (a non-linear element) is included in a pixel or a passive matrix method in which an active element is not included in a pixel can be used.
  • an active element not only a transistor but also a variety of active elements can be used.
  • an MIM metal insulator metal
  • a TFD thin film diode
  • the aperture ratio can be improved, so that power consumption can be reduced or higher luminance can be achieved.
  • an active element is not used in a passive matrix method, the number of manufacturing steps is small, so that the manufacturing cost can be reduced or the yield can be improved. Furthermore, since an active element is not used, the aperture ratio can be improved, so that power consumption can be reduced or higher luminance can be achieved.
  • Embodiment 2 can be referred to for a material of each layer.
  • a touch panel including an organic EL element is described in this embodiment as an example, one embodiment of the present invention is not limited to this example. In one embodiment of the present invention, for example, a touch panel including another element described in Embodiment 2 as an example can be formed.
  • FIG. 14A is a top view of the touch panel.
  • FIG. 14B is a cross-sectional view taken along dashed-dotted line A-B and dashed-dotted line C-D in FIG. 14A .
  • FIG. 14C is a cross-sectional view taken along dashed-dotted line E-F in FIG. 14A .
  • a touch panel 390 includes a display portion 301 as illustrated in FIG. 14A .
  • the display portion 301 includes a plurality of pixels 302 and a plurality of imaging pixels 308 .
  • the imaging pixels 308 can sense a touch of a finger or the like on the display portion 301 .
  • a touch sensor can be formed using the imaging pixels 308 .
  • Each of the pixels 302 includes a plurality of sub-pixels (e.g., a sub-pixel 302 R).
  • sub-pixels e.g., a sub-pixel 302 R.
  • light-emitting elements and pixel circuits that can supply electric power for driving the light-emitting elements are provided.
  • the pixel circuits are electrically connected to wirings through which selection signals are supplied and wirings through which image signals are supplied.
  • the touch panel 390 is provided with a scan line driver circuit 303 g ( 1 ) that can supply selection signals to the pixels 302 and an image signal line driver circuit 303 s ( 1 ) that can supply image signals to the pixels 302 .
  • the imaging pixels 308 include photoelectric conversion elements and imaging pixel circuits that drive the photoelectric conversion elements.
  • the imaging pixel circuits are electrically connected to wirings through which control signals are supplied and wirings through which power supply potentials are supplied.
  • control signal examples include a signal for selecting an imaging pixel circuit from which a recorded imaging signal is read, a signal for initializing an imaging pixel circuit, a signal for determining the time it takes for an imaging pixel circuit to sense light, and the like.
  • the touch panel 390 is provided with an imaging pixel driver circuit 303 g ( 2 ) that can supply control signals to the imaging pixels 308 and an imaging signal line driver circuit 303 s ( 2 ) that reads out imaging signals.
  • the touch panel 390 includes a substrate 510 and a substrate 570 facing the substrate 510 as illustrated in FIG. 14B .
  • Flexible materials can be favorably used for the substrate 510 and the substrate 570 .
  • Materials with which unintended passage of impurities is inhibited can be favorably used in the substrate 510 and the substrate 570 .
  • materials with a vapor permeability lower than or equal to 10 ⁇ 5 g/m 2 ⁇ day, preferably lower than or equal to 10 ⁇ 6 g/m 2 ⁇ day can be favorably used.
  • the substrate 510 can be favorably formed using a material whose coefficient of linear expansion is substantially equal to that of the substrate 570 .
  • the coefficient of linear expansion of the materials are preferably lower than or equal to 1 ⁇ 10 ⁇ 3 /K, further preferably lower than or equal to 5 ⁇ 10 ⁇ 5 /K, and still further preferably lower than or equal to 1 ⁇ 10 ⁇ 5 /K.
  • the substrate 510 is a stacked body including a flexible substrate 510 b , an insulating layer 510 a that prevents diffusion of unintentional impurities to light-emitting elements, and a bonding layer 510 c that attaches the insulating layer 510 a to the flexible substrate 510 b.
  • the substrate 570 is a stacked body including a flexible substrate 570 b , an insulating layer 570 a that prevents diffusion of unintentional impurities to the light-emitting elements, and a bonding layer 570 c that attaches the insulating layer 570 a to the substrate 570 b.
  • materials that include polyester, polyolefin, polyamide (e.g., nylon, aramid), polyimide, polycarbonate, or a resin having an acrylic bond, an urethane bond, an epoxy bond, or a siloxane bond can be used for the bonding layer.
  • a sealing layer 560 attaches the substrate 570 to the substrate 510 .
  • the sealing layer 560 has a refractive index higher than that of the air.
  • the pixel circuits and the light-emitting elements e.g., a light-emitting element 350 R are provided between the substrate 510 and the substrate 570 .
  • Each of the pixels 302 includes the sub-pixel 302 R, a sub-pixel 302 G, and a sub-pixel 302 B (see FIG. 14C ).
  • the sub-pixel 302 R includes a light-emitting module 380 R
  • the sub-pixel 302 G includes a light-emitting module 380 G
  • the sub-pixel 302 B includes a light-emitting module 380 B.
  • the sub-pixel 302 R includes the light-emitting element 350 R and the pixel circuit that can supply electric power to the light-emitting element 350 R and includes a transistor 302 t (see FIG. 14B ).
  • the light-emitting module 380 R includes the light-emitting element 350 R and an optical element (e.g., a coloring layer 367 R).
  • the light-emitting element 350 R includes a lower electrode 351 R, an upper electrode 352 , and an EL layer 353 between the lower electrode 351 R and the upper electrode 352 (see FIG. 14C ).
  • the EL layer 353 includes a light-emitting unit 353 a , a light-emitting unit 353 b , and an intermediate layer 354 between the light-emitting units 353 a and 353 b.
  • the light-emitting module 380 R includes the coloring layer 367 R on the substrate 570 .
  • the coloring layer transmits light of a particular wavelength and is, for example, a layer that selectively transmits light of red, green, or blue color. A region that transmits light emitted from the light-emitting element as it is may be provided as well.
  • the light-emitting module 380 R for example, includes the sealing layer 560 that is in contact with the light-emitting element 350 R and the coloring layer 367 R.
  • the coloring layer 367 R is positioned in a region overlapping with the light-emitting element 350 R. Accordingly, part of light emitted from the light-emitting element 350 R passes through the sealing layer 560 and through the coloring layer 367 R and is emitted to the outside of the light-emitting module 380 R as indicated by arrows in FIGS. 14B and 14C .
  • the touch panel 390 includes a light-blocking layer 367 BM on the substrate 570 .
  • the light-blocking layer 367 BM is provided so as to surround the coloring layer (e.g., the coloring layer 367 R).
  • the touch panel 390 includes an anti-reflective layer 367 p positioned in a region overlapping with the display portion 301 .
  • an anti-reflective layer 367 p a circular polarizing plate can be used, for example.
  • the touch panel 390 includes an insulating layer 321 .
  • the insulating layer 321 covers the transistor 302 t .
  • the insulating layer 321 can be used as a layer for planarizing unevenness caused by the pixel circuits.
  • An insulating layer on which a layer that can suppress diffusion of impurities to the transistor 302 t and the like is stacked can be used as the insulating layer 321 .
  • the touch panel 390 includes the light-emitting elements (e.g., the light-emitting element 350 R) over the insulating layer 321 .
  • the light-emitting elements e.g., the light-emitting element 350 R
  • the touch panel 390 includes, over the insulating layer 321 , a partition 328 that overlaps with an end portion of the lower electrode 351 R.
  • a spacer 329 that controls the distance between the substrate 510 and the substrate 570 is provided on the partition 328 .
  • the image signal line driver circuit 303 s ( 1 ) includes a transistor 303 t and a capacitor 303 c . Note that the driver circuit can be formed in the same process and over the same substrate as those of the pixel circuits. As illustrated in FIG. 14B , the transistor 303 t may include a second gate 304 over the insulating layer 321 . The second gate 304 may be electrically connected to a gate of the transistor 303 t , or different potentials may be supplied to these gates. Alternatively, if necessary, the second gate 304 may be provided for the transistor 308 t , the transistor 302 t , or the like.
  • the imaging pixels 308 each include a photoelectric conversion element 308 p and an imaging pixel circuit for sensing light received by the photoelectric conversion element 308 p .
  • the imaging pixel circuit includes a transistor 308 t.
  • a PIN photodiode can be used as the photoelectric conversion element 308 p.
  • the touch panel 390 includes a wiring 311 through which a signal can be supplied.
  • the wiring 311 is provided with a terminal 319 .
  • an FPC 309 ( 1 ) through which a signal such as an image signal or a synchronization signal can be supplied is electrically connected to the terminal 319 .
  • a printed wiring board (PWB) may be attached to the FPC 309 ( 1 ).
  • Transistors formed in the same process can be used as the transistor 302 t , the transistor 303 t , the transistor 308 t , and the like.
  • Gates, sources, and drains of the transistors, and various wirings and electrodes that form the touch panel can be formed to have a single-layer structure or a stacked-layer structure using, as a material, any of metals such as aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, and tungsten, or an alloy containing any of these metals as its main component.
  • metals such as aluminum, titanium, chromium, nickel, copper, yttrium, zirconium, molybdenum, silver, tantalum, and tungsten, or an alloy containing any of these metals as its main component.
  • FIGS. 15A and 15B are perspective views of a touch panel 505 . Note that FIGS. 15A and 15B illustrate only main components for simplicity.
  • FIG. 16A is a cross-sectional view taken along dashed-dotted line G 3 -G 4 in FIG. 15A .
  • the touch panel 505 includes a display portion 501 and a touch sensor 595 (see FIG. 15B ). Furthermore, the touch panel 505 includes the substrate 510 , the substrate 570 , and a substrate 590 . Note that the substrate 510 , the substrate 570 , and the substrate 590 each have flexibility.
  • the display portion 501 includes the substrate 510 , a plurality of pixels over the substrate 510 , and a plurality of wirings 511 through which signals are supplied to the pixels.
  • the plurality of wirings 511 are led to a peripheral portion of the substrate 510 , and part of the plurality of wirings 511 form a terminal 519 .
  • the terminal 519 is electrically connected to an FPC 509 ( 1 ).
  • the substrate 590 includes the touch sensor 595 and a plurality of wirings 598 electrically connected to the touch sensor 595 .
  • the plurality of wirings 598 are led to a peripheral portion of the substrate 590 , and part of the plurality of wirings 598 form a terminal The terminal is electrically connected to an FPC 509 ( 2 ).
  • FPC 509 2
  • FIG. 15B electrodes, wirings, and the like of the touch sensor 595 provided on the back side of the substrate 590 (the side facing the substrate 510 ) are indicated by solid lines for clarity.
  • a capacitive touch sensor can be used as the touch sensor 595 .
  • Examples of the capacitive touch sensor are a surface capacitive touch sensor and a projected capacitive touch sensor.
  • Examples of the projected capacitive touch sensor are a self capacitive touch sensor and a mutual capacitive touch sensor, which differ mainly in the driving method.
  • the use of a mutual capacitive type is preferable because multiple points can be sensed simultaneously.
  • the projected capacitive touch sensor 595 includes first electrodes 591 and second electrodes 592 .
  • the first electrodes 591 are electrically connected to any of the plurality of wirings 598
  • the second electrodes 592 are electrically connected to any of the other wirings 598 .
  • the second electrodes 592 each have a shape of a plurality of quadrangles arranged in one direction with one corner of a quadrangle connected to one corner of another quadrangle as illustrated in FIGS. 15A and 15B .
  • the first electrodes 591 each have a quadrangular shape and are arranged in a direction intersecting with the direction in which the second electrodes 592 extend.
  • a wiring 594 electrically connects two first electrodes 591 between which one of the second electrodes 592 is positioned.
  • the intersecting area of the one of the second electrodes 592 and the wiring 594 is preferably as small as possible. Such a structure allows a reduction in the area of a region where the electrodes are not provided, reducing unevenness in transmittance. As a result, unevenness in luminance of light from the touch sensor 595 can be reduced.
  • first electrodes 591 and the second electrodes 592 are not limited to the above-mentioned shapes and can be any of a variety of shapes.
  • a plurality of first electrodes each having a stripe shape may be provided so that space between two adjacent first electrodes are reduced as much as possible
  • a plurality of second electrodes each having a stripe shape may be provided so as to intersect the first electrodes with an insulating layer sandwiched between the first electrodes and the second electrodes.
  • two adjacent second electrodes may be spaced apart from each other.
  • the touch sensor 595 includes the substrate 590 , the first electrodes 591 and the second electrodes 592 provided in a staggered arrangement on the substrate 590 , an insulating layer 593 covering the first electrodes 591 and the second electrodes 592 , and the wiring 594 that electrically connects the adjacent first electrodes 591 to each other.
  • a bonding layer 597 attaches the substrate 590 to the substrate 570 so that the touch sensor 595 overlaps with the display portion 501 as illustrated in FIG. 15B .
  • the first electrodes 591 and the second electrodes 592 are formed using a light-transmitting conductive material.
  • a light-transmitting conductive material a conductive oxide such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, or zinc oxide to which gallium is added can be used.
  • a film including graphene may be used as well.
  • the film including graphene can be formed, for example, by reducing a film containing graphene oxide. As a reducing method, a method with application of heat or the like can be employed.
  • the first electrodes 591 and the second electrodes 592 may be formed by depositing a light-transmitting conductive material on the substrate 590 by a sputtering method and then removing an unnecessary portion by a variety of patterning technique such as photolithography.
  • Examples of a material for the insulating layer 593 are a resin such as acrylic or an epoxy resin, a resin having a siloxane bond, and an inorganic insulating material such as silicon oxide, silicon oxynitride, or aluminum oxide.
  • openings reaching the first electrodes 591 are formed in the insulating layer 593 , and the wiring 594 electrically connects the adjacent first electrodes 591 .
  • a light-transmitting conductive material can be favorably used as the wiring 594 because the aperture ratio of the touch panel can be increased.
  • a material with higher conductivity than the conductivities of the first electrode 591 and the second electrode 592 can be favorably used for the wiring 594 because electric resistance can be reduced.
  • Each of the second electrodes 592 extends in one direction, and the second electrodes 592 are provided in the form of stripes.
  • the wiring 594 intersects with one of the second electrodes 592 .
  • Adjacent first electrodes 591 are provided with one of the second electrodes 592 provided therebetween and are electrically connected by the wiring 594 .
  • first electrodes 591 are not necessarily arranged in the direction orthogonal to the one of the second electrodes 592 .
  • the wirings 598 are electrically connected to the first electrodes 591 and the second electrodes 592 . Part of the wirings 598 serves as a terminal
  • a metal material such as aluminum, gold, platinum, silver, nickel, titanium, tungsten, chromium, molybdenum, iron, cobalt, copper, or palladium or an alloy material containing any of these metal materials can be used.
  • an insulating layer covering the insulating layer 593 and the wiring 594 may be provided to protect the touch sensor 595 .
  • connection layer 599 electrically connects the wirings 598 to the FPC 509 ( 2 ).
  • connection layer 599 any of various anisotropic conductive films (ACF), anisotropic conductive pastes (ACP), or the like can be used.
  • ACF anisotropic conductive films
  • ACP anisotropic conductive pastes
  • the bonding layer 597 has a light-transmitting property.
  • a thermosetting resin or an ultraviolet curable resin can be used; specifically, a resin such as an acrylic resin, a urethane resin, an epoxy resin, or a resin having a siloxane bond can be used.
  • the display portion 501 includes a plurality of pixels arranged in a matrix. Each of the pixels includes a display element and a pixel circuit for driving the display element.
  • organic EL elements that emit light of different colors may be included in sub-pixels so that the light of different colors can be emitted from the respective sub-pixels.
  • Structures which are similar to those of the substrate 510 , the substrate 570 , and the sealing layer 560 in Structure Example 2-1 can be applied to the substrate 510 , the substrate 570 , and the sealing layer 560 in Structure Example 2-2.
  • a pixel includes a sub-pixel 502 R, and the sub-pixel 502 R includes a light-emitting module 580 R.
  • the sub-pixel 502 R includes a light-emitting element 550 R and the pixel circuit that can supply electric power to the light-emitting element 550 R and includes a transistor 502 t . Furthermore, the light-emitting module 580 R includes the light-emitting element 550 R and an optical element (e.g., a coloring layer 567 R).
  • the light-emitting element 550 R includes a lower electrode, an upper electrode, and an EL layer between the lower electrode and the upper electrode.
  • the light-emitting module 580 R includes the coloring layer 567 R on the light extraction side.
  • the sealing layer 560 is provided on the light extraction side, the sealing layer 560 is in contact with the light-emitting element 550 R and the coloring layer 567 R.
  • the coloring layer 567 R is positioned in a region overlapping with the light-emitting element 550 R. Accordingly, part of light emitted from the light-emitting element 550 R passes through the coloring layer 567 R and is emitted to the outside of the light-emitting module 580 R as indicated by arrows in FIG. 16A .
  • the display portion 501 includes a light-blocking layer 567 BM on the light extraction side.
  • the light-blocking layer 567 BM is provided so as to surround the coloring layer (e.g., the coloring layer 567 R).
  • the display portion 501 includes an anti-reflective layer 567 p positioned in a region overlapping with pixels.
  • an anti-reflective layer 567 p a circular polarizing plate can be used, for example.
  • the display portion 501 includes an insulating film 521 .
  • the insulating film 521 covers the transistor 502 t .
  • the insulating film 521 can be used as a layer for planarizing unevenness caused by the pixel circuits.
  • a stacked film including a layer that can prevent diffusion of impurities can be used as the insulating film 521 . This can prevent the reliability of the transistor 502 t or the like from being lowered by diffusion of unintentional impurities.
  • the display portion 501 includes the light-emitting elements (e.g., the light-emitting element 550 R) over the insulating film 521 .
  • the light-emitting elements e.g., the light-emitting element 550 R
  • the display portion 501 includes, over the insulating film 521 , a partition 528 that overlaps with an end portion of the lower electrode.
  • a spacer that controls the distance between the substrate 510 and the substrate 570 is provided on the partition 528 .
  • a scan line driver circuit 503 g ( 1 ) includes a transistor 503 t and a capacitor 503 c . Note that the driver circuit can be formed in the same process and over the same substrate as those of the pixel circuits.
  • the display portion 501 includes a wiring 511 through which a signal can be supplied.
  • the wiring 511 is provided with a terminal 519 .
  • the FPC 509 ( 1 ) through which a signal such as an image signal or a synchronization signal can be supplied is electrically connected to the terminal 519 .
  • PWB printed wiring board
  • the display portion 501 includes wirings such as scan lines, signal lines, and power supply lines. Any of the various conductive films described above can be used as the wirings.
  • any of various kinds of transistors can be used in the display portion 501 .
  • a structure in the case of using bottom-gate transistors in the display portion 501 is illustrated in FIGS. 16A and 16B .
  • a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like can be used in the transistor 502 t and the transistor 503 t illustrated in FIG. 16A .
  • a semiconductor layer containing polycrystalline silicon that is obtained by crystallization process such as laser annealing can be used in the transistor 502 t and the transistor 503 t illustrated in FIG. 16B .
  • FIG. 16C A structure in the case of using top-gate transistors in the display portion 501 is illustrated in FIG. 16C .
  • a semiconductor layer including polycrystalline silicon, a single crystal silicon film that is transferred from a single crystal silicon substrate, or the like can be used in the transistor 502 t and the transistor 503 t illustrated in FIG. 16C .
  • FIGS. 17A to 17C are cross-sectional views of a touch panel 505 B.
  • the touch panel 505 B described in this embodiment is different from the touch panel 505 in Structure Example 2-2 in that the display portion 501 displays received image data on the side where the transistors are provided and that the touch sensor is provided on the substrate 510 side of the display portion.
  • Different structures will be described in detail below, and the above description is referred to for the other similar structures.
  • the coloring layer 567 R is positioned in a region overlapping with the light-emitting element 550 R.
  • the light-emitting element 550 R illustrated in FIG. 17A emits light to the side where the transistor 502 t is provided. Accordingly, part of light emitted from the light-emitting element 550 R passes through the coloring layer 567 R and is emitted to the outside of the light-emitting module 580 R as indicated by arrows in FIG. 16A .
  • the display portion 501 includes the light-blocking layer 567 BM on the light extraction side.
  • the light-blocking layer 567 BM is provided so as to surround the coloring layer (e.g., the coloring layer 567 R).
  • the touch sensor 595 is provided on the substrate 510 side of the display portion 501 (see FIG. 17A ).
  • the bonding layer 597 is provided between the substrate 510 and the substrate 590 and attaches the touch sensor 595 to the display portion 501 .
  • any of various kinds of transistors can be used in the display portion 501 .
  • a structure in the case of using bottom-gate transistors in the display portion 501 is illustrated in FIGS. 17A and 17B .
  • a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like can be used in the transistor 502 t and the transistor 503 t illustrated in FIG. 17A .
  • a semiconductor layer containing polycrystalline silicon or the like can be used in the transistor 502 t and the transistor 503 t illustrated in FIG. 17B .
  • FIG. 17C A structure in the case of using top-gate transistors in the display portion 501 is illustrated in FIG. 17C .
  • a semiconductor layer containing polycrystalline silicon, a transferred single crystal silicon film, or the like can be used in the transistor 502 t and the transistor 503 t illustrated in FIG. 17C .
  • the definition of an image is one indicator of the stereoscopic effects in a two-dimensional image for the viewers.
  • a stereoscopic effect felt from an image in the case of viewing a moving image having a definition of 229 ppi was stronger than that felt from an image in the case of viewing a moving image having a definition of 114.5 ppi.
  • Almost the same stereoscopic effects were felt from both an image in the case of viewing a moving image having a definition of 229 ppi and an image in the case of viewing a moving image having a definition of 458 ppi. Accordingly, it is possible for the viewers to feel stereoscopic effects in a two-dimensional image when the definition of the image is sufficiently high.
  • contrast of an image is another indicator of the stereoscopic effect in a two-dimensional image for the viewers.
  • stereoscopic effects that the viewers felt became weaker when the luminance of black displayed in the display device used for viewing was gradually changed from a minimum value to a higher value. Accordingly, it is possible for the viewers to feel stereoscopic effects in a two-dimensional image as the contrast of the image becomes higher.
  • a viewer can feel a stereoscopic effect in a two-dimensional image either in the case of a still image or in the case of a moving image.
  • the viewers can feel stereoscopic effects in a two-dimensional image more easily in the case of a moving image.
  • the viewers can feel stereoscopic effects in a two-dimensional image either in the case of a monochrome image or a full-color image.
  • Recognition is another indicator of the stereoscopic effects in a two-dimensional image for the viewers.
  • the focal length of eyes of the viewers when viewing a two-dimensional image displayed on a display device was measured.
  • the display device two kinds of display devices which were a flat-panel organic EL display (3.93 inch, 458 ppi, and a contrast ratio of 100000:1 or more) and a flat-panel liquid crystal display (3.5 inch, 326 ppi, and a contrast ratio of 800:1) were used. Note that each viewer responded in sensitivity evaluation carried out in advance that he/she felt a stronger stereoscopic effect in the displayed two-dimensional image when seeing the flat-panel organic EL display than the flat-panel liquid crystal display.
  • Binocular Auto Reflex/Keratometer (WAM-5500, manufactured by REXXAM Co., Ltd.) was used.
  • the two-dimensional images displayed on the two kinds of display devices are the same moving images reproduced for 15 seconds.
  • the moving images were each repeated three times.
  • the viewers followed the images in similar ways; in the first half of the moving images for 15 seconds, the viewers saw an object they felt was located on the front side and in the second half of the moving images, the viewers saw the object they felt was located on the back side.
  • the visual distance was 30 cm and the luminance of the display device was 300 cd/m 2 .
  • FIG. 18 shows the measurement results of the focal length of one viewer.
  • the vertical axis represents the focal length of eyes of the viewer
  • the horizontal axis represents measurement time.
  • the display device used for the sensitivity evaluation was a 3.4-inch sized flexible organic EL display with a definition of 326 ppi.
  • This organic EL display has the structure of Structure Example 1-3 described in Embodiment 2.
  • An oxide semiconductor (CAAC-OS) was used for the transistor.
  • the organic EL display was fabricated by using the manufacturing method described in Embodiment 2.
  • FIG. 1 A 1 In four samples of this display device, one bent as illustrated in FIG. 1 A 1 is referred to as a sample A, one bent as illustrated in FIG. 1 B 1 is referred to as a sample B, one bent as illustrated in FIG. 1 C 1 is referred to as a sample C, and one bent as illustrated in FIG. 1 D 1 is referred to as a sample D.
  • Each sample had the same curvature when bent with a curvature radius of 50 mm.
  • a comparative sample formed by fixing the display device on a flat glass substrate was prepared.
  • the comparative sample can be referred to as a display device including a display portion without a curved surface.
  • a display device having a display portion 101 and a non-display portion 102 illustrated in FIG. 21D corresponds to the comparative sample (Ref) (without a frame portion 103 ).
  • the following cases were compared to evaluate whether there is a difference in a stereoscopic effect, an effect of making viewers feel an image pops out to the viewer side (a pop-out effect), and a sense of depth of the image: the case where a display portion of any of the samples A to D, which displayed the same moving images, was viewed; and the case where a display portion of the comparative sample, which displayed the same moving image, was viewed.
  • the viewer compared and evaluated the display portion of any of the samples A to D and the display portion of the comparative sample that are laid side by side. There were 35 examinees.
  • a semantic differential (SD) method was used. Specifically, the display portion of any of the samples A to D was viewed by comparing with the display portion of the comparative sample, and whether there was a stereoscopic effect, a pop-out effect, and a sense of depth in the moving image on a scale of +2 to ⁇ 2 (“extremely strong (+2)”, “strong (+1)”, “not different (0)”, “weak ( ⁇ 1)”, and “extremely weak ( ⁇ 2)” was evaluated.
  • FIGS. 19A and 19B and FIG. 20A show evaluation results.
  • the average score of the 35 examinees is shown.
  • a condition under which a significant difference is statistically observed at a probability of 95% or more is indicated by *.
  • FIGS. 19A and 19B and FIG. 20A it is found that when the display portion having a curved surface is viewed, a stereoscopic effect, a pop-out effect, and a sense of depth in the image are strong as compared with the case of viewing the display portion without a curved surface regardless of the curved direction of the display portions.
  • the sample A and the sample B which was curved in a horizontal direction and in which distortion was caused in a horizontal direction gave a viewer a higher effect obtained by the curvature than the sample C and the sample D which was curved in a vertical direction and in which distortion was not caused in a horizontal direction.
  • FIG. 19A it was found that, between the sample A and the sample B curved in a horizontal direction, a stronger stereoscopic effect was obtained in the sample A having a convex surface on the viewer side than in the sample B. This is considered to be due to the difference in the distance between a viewer and a display portion.
  • FIG. 20B shows the amount of change in the distance between the left eye of a viewer and a display portion when the display portions of the sample A and the sample B are each viewed from the left end to the right end.
  • the visual distance was 30 cm.
  • the visual distance at the left end of the display portion was the reference.
  • the left eye of a viewer and a display portion are the closest to each other in a region of the display portion between a slight right side of the left end and a slight left side of the center, and the distance becomes longer as the eye are closer to the right end.
  • the distance between the left eye of the viewer and the display portion is larger at the right end than the left end of the display portion.
  • the amount of change in the distance between the left eye of a viewer and a display portion is large and much information travel to the brain of the viewer as compared with the case of having a concave surface on the viewer side; therefore, the viewer easily has an optical illusion and senses as if a stereoscopic effect is increased.
  • a display device including a display portion having a curved surface of one embodiment of the present invention can have a strong stereoscopic effect, pop-out effect, and sense of depth in a two-dimensional image as compared with the display device including the display portion without a curved surface.
  • the display device used for the sensitivity evaluation was a 3.4-inch sized flexible organic EL display with a definition of 326 ppi.
  • the structure and the manufacturing method are similar to those of the display device used for the above sensitivity evaluation.
  • a sample a In two samples of this display device, one bent as illustrated in FIG. 1 A 1 is referred to as a sample a, and one bent as illustrated in FIG. 1 B 1 is referred to as a sample b.
  • the following cases were compared to evaluate whether there is a difference in a stereoscopic effect, naturalness (here, whether there is uncomfortable feeling), fatigue, and desirousness of actually using the sample as a device: the case where a display portion of the sample a or the sample b, which both displayed the same moving image and was bent at any of four kinds of curvature radiuses, was viewed; and the case where a display portion of the comparative sample which displayed the same moving image, was viewed.
  • the viewer compared and evaluated the display portion of the sample a or the sample b and the display portion of the comparative sample that are laid side by side. There were 24 examinees.
  • an SD method was used for the evaluation.
  • the display portion of the sample a or the sample b was viewed by comparing with the display portion of the comparative sample, and whether there was a stereoscopic effect, naturalness, fatigue, and desirousness of actually using the sample as a device in the moving image on the above scale was evaluated in a manner similar to that of the above sensitivity evaluation.
  • FIGS. 27A and 27B and FIGS. 28A and 28B show evaluation results.
  • the average score of the 24 examinees is shown.
  • a condition under which a significant difference is statistically observed at a probability of 95% or more is indicated by *.
  • the convex surface with a stronger pop-out effect than the flat surface and the concave surface with a stronger sense of depth than the flat surface in the above sensitivity evaluation each have a condition of a curvature radius which effectively increases the stereoscopic effect.
  • the sample a having a convex surface and the sample b having a concave surface can effectively obtain strong stereoscopic effects with curvature radiuses R of 100 mm and 200 mm, respectively.
  • the display device of one embodiment of the present invention described as an example in Embodiment 1 is effective in that a viewer can feel a strong stereoscopic effect or sense of depth in a two-dimensional image because the degree of a curvature can be adjusted by the viewer or the display device so that curvature suitable for the viewer can be obtained.
  • the display device used for the sensitivity evaluation was a 13.5-inch sized flexible organic EL display with a definition of 326 ppi.
  • This organic EL display has the structure of Structure Example 1-3 described in Embodiment 2.
  • An oxide semiconductor (CAAC-OS) was used for the transistor.
  • the organic EL display was fabricated by using the manufacturing method described in Embodiment2.
  • a comparative sample formed by fixing the display device on a flat glass substrate and was viewed through an opening of a light-blocking flat frame portion was prepared as illustrated in FIG. 21D .
  • the viewer sees a moving image displayed on the display portion from the front unless otherwise described.
  • the distance between the viewer and the display portion was 50 cm or more and 60 cm or less. Evaluation was performed in a lighted room.
  • the distance between the frame portion and the display portion was 10 cm.
  • a sheet of black drawing paper was used for the light-blocking frame portion.
  • the size of an opening of the light-blocking frame portion and the size of the display portion appear to be substantially the same from the viewer side (an inner frame (the periphery of the opening) of the frame portion appears to substantially align with an end portion of the display portion) when the distance between the frame portion and the display portion is 10 cm. Therefore, when the distance between the frame portion and the display portion exceeds 10 cm, the viewer can see the end portion of the display portion through the opening of the frame portion.
  • the sample E and the sample F were compared, the comparative sample and the sample F were compared, and the sample F and the sample G were compared.
  • an SD method was used. Specifically, a stereoscopic effect, a pop-out effect, a sense of depth, and naturalness in the moving image of the display portion of the other sample were evaluated by comparing with the case of viewing the display portion of the one sample on a scale of +2 to ⁇ 2 (“extremely strong (+2)”, “strong (+1)”, “not different (0)”, “weak ( ⁇ 1)”, and “extremely weak ( ⁇ 2)”.
  • FIGS. 22A and 22B and FIG. 23 show evaluation results. In the evaluation results, the average score of the 7 examinees is shown.
  • FIG. 22A shows a stereoscopic effect, a pop-out effect, a sense of depth, and naturalness in the moving image of the display portion of the sample F in comparison with the display portion of the sample E.
  • the display device including the display portion having a curved surface can have a stronger stereoscopic effect, pop-out effect, and sense of depth when viewing the display portion through an opening of a frame portion, than viewing the display portion without through the opening of the frame portion.
  • a viewer did not feel large uncomfortable feeling even with a frame portion from the result that naturalness did not change.
  • a display device including a display portion having a curved surface of one embodiment of the present invention can have a strong stereoscopic effect, pop-out effect, and sense of depth in a two-dimensional image.
  • FIG. 22B shows a stereoscopic effect, a pop-out effect, a sense of depth, and naturalness in the moving image of the display portion of the sample F in comparison with the display portion of the comparative sample.
  • the display device including the display portion having a curved surface can have a stronger stereoscopic effect, pop-out effect, and sense of depth when viewing the display portion through an opening of a frame portion, than viewing the display device including the display portion without a curved surface through the opening of the frame portion.
  • a viewer did not feel large uncomfortable feeling even when the display portion has a curved surface from the result that naturalness did not change.
  • FIG. 23 shows a stereoscopic effect, a pop-out effect, a sense of depth, and naturalness in the moving image of the display portion of the sample G in comparison with the display portion of the sample F.
  • the display device including the display portion having a curved surface can have a stronger stereoscopic effect, pop-out effect, and sense of depth when viewing the display portion through an opening of a curved frame portion, than viewing the display portion through an opening of a flat frame portion.
  • a viewer did not feel large uncomfortable feeling even when the frame portion was curved from the result that naturalness did not change.
  • a distance between the frame portion and the display portion be able to be controlled so that the end portion of the display portion overlaps with the frame portion and a viewer cannot see the end portion of the display portion.
  • the display device including the display portion having a curved surface can have a stronger stereoscopic effect, pop-out effect, and sense of depth when viewing the display portion through the opening of the frame portion, than viewing the display portion without through the opening of the frame portion.
  • a strong stereoscopic effect, pop-out effect, and sense of depth were able to be obtained by using a curved frame portion as compared with the case of using a flat frame portion.
  • the involuntary eye movement is minute movement of eyes. Eyes keep moving even when the sight line stays at the same place as in the case of viewing a stationary body. Being continuously affected by the same stimulus, a visual cell gets tired with the stimulus and cannot recognize objects.
  • the involuntary eye movement is considered as a physiological phenomenon for continuing perception of visual information.
  • the involuntary eye movement can be classified into microsaccade (intermittent and minute saccade of a visual point, which is also referred to as flick), drift (a curvilinear oscillation), and tremor (a minute oscillation).
  • microsaccade and drift are concerned with recognition of a high resolution image; therefore, the possibility exists that the amount of the involuntary eye movement affects the stereoscopic recognition.
  • the display device two kinds of display devices which are a flat-panel organic EL display (5.9 inch, 249 ppi, and a contrast ratio of 100000:1 or more) and a flat-panel liquid crystal display (6.05 inch, 212 ppi and a contrast ratio of 91:1) were used.
  • eye movement of examinees when the display device was viewed was measured using a limbus tracking method.
  • the two-dimensional images displayed on the two kinds of display devices are the same still images.
  • the eye movement of an examinee was measured under a condition in which the examinee paid attention to a black Landolt ring which was displayed in a white background (luminance of 200 cd/m 2 ).
  • FIG. 24 shows the amount of microsaccade generated in each examinee for each of the organic EL display and the liquid crystal display.
  • the vertical axis represents the amount of generated microsaccade.
  • FIG. 24 indicates that the occurrence frequency of microsaccade in the organic EL display is greater than that in the liquid crystal display.
US14/551,989 2013-11-27 2014-11-24 Display device Active US9572268B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US15/428,327 US9864411B2 (en) 2013-11-27 2017-02-09 Display device

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP2013-244743 2013-11-27
JP2013244743 2013-11-27
JP2014-132607 2014-06-27
JP2014132607 2014-06-27
JP2014180540 2014-09-04
JP2014-180540 2014-09-04

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/428,327 Continuation US9864411B2 (en) 2013-11-27 2017-02-09 Display device

Publications (2)

Publication Number Publication Date
US20150145755A1 US20150145755A1 (en) 2015-05-28
US9572268B2 true US9572268B2 (en) 2017-02-14

Family

ID=53182210

Family Applications (2)

Application Number Title Priority Date Filing Date
US14/551,989 Active US9572268B2 (en) 2013-11-27 2014-11-24 Display device
US15/428,327 Active US9864411B2 (en) 2013-11-27 2017-02-09 Display device

Family Applications After (1)

Application Number Title Priority Date Filing Date
US15/428,327 Active US9864411B2 (en) 2013-11-27 2017-02-09 Display device

Country Status (3)

Country Link
US (2) US9572268B2 (ko)
JP (3) JP6592239B2 (ko)
KR (2) KR102315659B1 (ko)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20170171998A1 (en) * 2015-12-11 2017-06-15 Au Optronics Corporation Back plate of curved display device and curved display device using same
US9710033B2 (en) 2014-02-28 2017-07-18 Semiconductor Energy Laboratory Co., Ltd. Electronic device
CN109618042A (zh) * 2018-10-30 2019-04-12 努比亚技术有限公司 显示距离控制方法、可折叠终端及计算机可读存储介质
US10268238B2 (en) * 2017-06-08 2019-04-23 Google Llc Foldable display neutral axis management with thin, high modulus layers
CN110740598A (zh) * 2019-10-14 2020-01-31 Oppo广东移动通信有限公司 壳体及制备方法、电子设备
US20200097044A1 (en) * 2018-09-24 2020-03-26 Apple Inc. Hybrid coverlay/window structure for flexible display applications
US20200111845A1 (en) * 2017-11-28 2020-04-09 Nissha Co., Ltd. Hard coat-attached film type touch sensor and flexible device using same

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD778248S1 (en) * 2013-04-08 2017-02-07 Lg Electronics Inc. Television receiver
USD778249S1 (en) * 2013-04-08 2017-02-07 Lg Electronics Inc. Television receiver
US10547831B2 (en) 2013-11-27 2020-01-28 Semiconductor Energy Laboratory Co., Ltd. Display device and display device frame
KR20150061574A (ko) * 2013-11-27 2015-06-04 가부시키가이샤 한도오따이 에네루기 켄큐쇼 표시 장치 및 표시 장치용 테두리
US9229481B2 (en) 2013-12-20 2016-01-05 Semiconductor Energy Laboratory Co., Ltd. Semiconductor device
CN104238923B (zh) * 2014-07-29 2019-03-29 京东方科技集团股份有限公司 一种显示设备及其工作方法
USD743705S1 (en) * 2014-08-07 2015-11-24 II Ronald L. Cisler Curved panoramic picture frame
CN104282235A (zh) * 2014-11-03 2015-01-14 京东方科技集团股份有限公司 曲面显示面板、装置及其制造方法
KR20160064978A (ko) 2014-11-28 2016-06-08 가부시키가이샤 한도오따이 에네루기 켄큐쇼 표시 장치, 모듈, 표시 시스템, 및 전자 기기
KR20160067518A (ko) * 2014-12-04 2016-06-14 삼성전자주식회사 영상 생성 방법 및 장치
CN106708298B (zh) * 2015-07-17 2023-09-22 宸鸿科技(厦门)有限公司 触控面板及其接合结构
KR102358641B1 (ko) * 2015-07-20 2022-02-07 삼성디스플레이 주식회사 곡면 표시 장치
KR102366421B1 (ko) * 2015-07-29 2022-02-23 엘지디스플레이 주식회사 폴더블 표시장치용 백플레이트 및 이를 포함하는 폴더블 표시장치
US10485100B2 (en) 2015-09-30 2019-11-19 Semiconductor Energy Laboratory Co., Ltd. Circuit board and display system
CN105118401B (zh) * 2015-10-12 2018-03-02 京东方科技集团股份有限公司 显示装置及显示设备
US9924604B2 (en) 2015-11-04 2018-03-20 Nanolumens Acquisition, Inc. Modular flexible convex display system and methods
USD822633S1 (en) 2015-11-04 2018-07-10 Lenovo (Beijing) Co., Ltd. Flexible electronic device
USD820801S1 (en) 2015-11-04 2018-06-19 Lenovo (Beijing) Co., Ltd. Flexible electronic device
CN105609006B (zh) * 2015-12-31 2020-05-19 京东方科技集团股份有限公司 一种柔性装置
CN105467692B (zh) * 2016-02-19 2018-10-26 京东方科技集团股份有限公司 一种曲面显示面板及曲面显示器
US10003023B2 (en) * 2016-04-15 2018-06-19 Semiconductor Energy Laboratory Co., Ltd. Display device and electronic device
JP6826376B2 (ja) * 2016-04-28 2021-02-03 エルジー ディスプレイ カンパニー リミテッド 電気光学パネル
CN106131251B (zh) * 2016-07-08 2018-07-06 广东欧珀移动通信有限公司 柔性屏支撑结构、柔性显示屏模组及移动终端
WO2018058404A1 (zh) 2016-09-29 2018-04-05 深圳市柔宇科技有限公司 柔性屏支撑装置及柔性屏
EP4152132A1 (en) * 2016-12-07 2023-03-22 FlatFrog Laboratories AB An improved touch device
JP6991137B2 (ja) * 2017-01-17 2022-01-12 積水化学工業株式会社 充填接合材、保護シート付き充填接合材、積層体、光学デバイス及び光学デバイス用保護パネル
CN117111309A (zh) * 2017-06-14 2023-11-24 李程 头戴式显示器及其显示屏、头戴支架和视频
CN107293217A (zh) * 2017-07-05 2017-10-24 深圳传音控股有限公司 一种智能终端的屏幕及具有该屏幕的智能终端
TW201918817A (zh) * 2017-11-02 2019-05-16 宏碁股份有限公司 電子裝置
US11335218B2 (en) 2017-12-07 2022-05-17 Sony Group Corporation Display device
KR102420438B1 (ko) * 2018-01-08 2022-07-14 삼성디스플레이 주식회사 표시 장치 및 휴대용 단말기
CN108305572B (zh) * 2018-01-27 2020-05-19 武汉华星光电半导体显示技术有限公司 多媒体播放装置
JP2020012944A (ja) * 2018-07-17 2020-01-23 株式会社デンソー 表示装置
USD920440S1 (en) 2018-12-04 2021-05-25 Aristocrat Technologies Australia Pty Limited Curved button panel display for an electronic gaming machine
USD920441S1 (en) 2018-12-04 2021-05-25 Aristocrat Technologies Australia Pty Limited Curved button panel display for an electronic gaming machine
USD920439S1 (en) 2018-12-04 2021-05-25 Aristocrat Technologies Australia Pty Limited Curved button panel display for an electronic gaming machine
US10733830B2 (en) 2018-12-18 2020-08-04 Aristocrat Technologies Pty Limited Gaming machine display having one or more curved edges
USD923592S1 (en) * 2018-12-18 2021-06-29 Aristocrat Technologies Australia Pty Limited Electronic gaming machine
US11079996B2 (en) * 2019-03-22 2021-08-03 International Business Machines Corporation Cellular display device
KR102600921B1 (ko) * 2019-11-04 2023-11-14 삼성디스플레이 주식회사 커브드 표시 장치
MX2022005641A (es) 2019-11-22 2022-07-11 Jfe Steel Corp Laminadora para laminado de reduccion de diametro y metodo para la fabricacion de material en tira.
EP4083685A4 (en) * 2019-12-27 2023-06-14 Sony Group Corporation INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING SYSTEM AND PART
CN113885288A (zh) * 2020-07-03 2022-01-04 中强光电股份有限公司 曲面壳体及其制造方法
CN111951686A (zh) * 2020-08-26 2020-11-17 京东方科技集团股份有限公司 柔性显示面板贴附装置
CN114822251B (zh) * 2020-12-28 2023-06-02 武汉天马微电子有限公司 一种显示面板及显示装置
JP2022173763A (ja) * 2021-05-10 2022-11-22 セイコーエプソン株式会社 投写方法、及びプロジェクター
CN113570973B (zh) * 2021-08-11 2023-07-21 上海天马微电子有限公司 可变形显示装置及其变形控制方法
WO2024034481A1 (ja) * 2022-08-10 2024-02-15 ソニーグループ株式会社 立体視表示装置

Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144417A (en) 1995-11-07 2000-11-07 Yugen Kaisha Sozoan Window frame for screen
WO2004003630A1 (en) 2002-06-28 2004-01-08 Sharp Kabushiki Kaisha Optical device and display operating in two dimensional and autostereoscopic three dimensional modes
US7260135B2 (en) 2003-09-26 2007-08-21 Semiconductor Energy Laboratory Co., Ltd. Light emitting device
US7335573B2 (en) 2001-11-30 2008-02-26 Semiconductor Energy Laboratory Co., Ltd. Vehicle, display device and manufacturing method for a semiconductor device
US20080224951A1 (en) * 2007-03-16 2008-09-18 Motorola, Inc. Visual interface with configurable viewing area for electronic device
US7502392B2 (en) 2003-09-12 2009-03-10 Semiconductor Energy Laboratory Co., Ltd. Laser oscillator
US20100149149A1 (en) * 2008-12-15 2010-06-17 Lawther Joel S Display system
US20110134145A1 (en) * 2009-12-04 2011-06-09 Sony Corporation Display device and method of controlling display device
US20110254037A1 (en) 2010-04-16 2011-10-20 Semiconductor Energy Laboratory Co., Ltd. Light-Emitting Device and Electronic Device
JP2011228759A (ja) 2010-04-15 2011-11-10 Yanagisawa Ken 画像用フレーム
US20120075166A1 (en) * 2010-09-29 2012-03-29 Samsung Electronics Co. Ltd. Actuated adaptive display systems
US8188474B2 (en) 2008-10-16 2012-05-29 Semiconductor Energy Laboratory Co., Ltd. Flexible light-emitting device
US20120140147A1 (en) * 2009-10-09 2012-06-07 Eiji Satoh Display panel, display system, portable terminal and electronic device
US20130114193A1 (en) * 2011-11-08 2013-05-09 Samsung Electronics Co., Ltd. Flexible display apparatus
US20130135259A1 (en) * 2011-11-28 2013-05-30 Jeffrey Stapleton King Robust Optical Touch - Screen Systems And Methods Using A Planar Transparent Sheet
US20130155655A1 (en) * 2011-12-19 2013-06-20 Moungyoub Lee Display apparatus
US20130164437A1 (en) 2011-12-22 2013-06-27 Semiconductor Energy Laboratory Co., Ltd. Film Formation Apparatus and Film Formation Method
US20140045283A1 (en) 2012-08-10 2014-02-13 Semiconductor Energy Laboratory Co., Ltd. Method for Manufacturing Light-Emitting Device
US20140118319A1 (en) * 2012-10-29 2014-05-01 Samsung Display Co., Ltd. Flexible display device and method of compensating for luminance of the flexible display device
US8766269B2 (en) 2009-07-02 2014-07-01 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, lighting device, and electronic device
US8859304B2 (en) 2011-12-23 2014-10-14 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device and manufacturing method thereof
US20140307314A1 (en) 2013-04-12 2014-10-16 Semiconductor Energy Laboratory Co., Ltd. Display device

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4912096U (ko) * 1972-04-28 1974-02-01
JPH11218744A (ja) * 1998-01-30 1999-08-10 Sony Corp 液晶表示パネル固定用枠、液晶表示装置およびその製造方法
JP4515444B2 (ja) * 1998-12-28 2010-07-28 株式会社半導体エネルギー研究所 表示装置
JP2000341607A (ja) * 1999-05-28 2000-12-08 Sony Corp ディスプレイ装置
JP2004350869A (ja) * 2003-05-28 2004-12-16 Heiwa Corp 遊技機
JP2007171681A (ja) * 2005-12-22 2007-07-05 Infovision Optoelectronics Holdings Ltd 湾曲液晶表示装置に用いるバックライト及び湾曲液晶表示装置
JP2009008994A (ja) * 2007-06-29 2009-01-15 Nippon Seiki Co Ltd 表示装置
WO2009050812A1 (ja) * 2007-10-18 2009-04-23 Fujitsu Limited 表示装置および表示システム
JP5155826B2 (ja) * 2007-12-27 2013-03-06 セイコーインスツル株式会社 表示装置の製造方法
JP2010002486A (ja) * 2008-06-18 2010-01-07 Hitachi Displays Ltd 液晶表示装置
JP5191920B2 (ja) * 2009-02-04 2013-05-08 株式会社ジャパンディスプレイイースト 液晶表示装置
JP5157979B2 (ja) * 2009-03-18 2013-03-06 三菱電機株式会社 液晶表示装置
KR20100136289A (ko) * 2009-06-18 2010-12-28 엘지전자 주식회사 이동 단말기의 디스플레이 제어 방법
JP5174781B2 (ja) * 2009-10-15 2013-04-03 三菱電機株式会社 表示装置およびその製造方法
CN101915999A (zh) * 2010-07-12 2010-12-15 深圳市华星光电技术有限公司 非平面显示模块及其背框支撑架构造
JP5842602B2 (ja) * 2011-12-26 2016-01-13 株式会社Ｊｏｌｅｄ 曲面ディスプレイ
KR101507206B1 (ko) * 2012-02-13 2015-03-30 엘지디스플레이 주식회사 유연한 표시장치
KR102061684B1 (ko) * 2013-04-29 2020-01-03 삼성디스플레이 주식회사 표시패널

Patent Citations (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6144417A (en) 1995-11-07 2000-11-07 Yugen Kaisha Sozoan Window frame for screen
US7335573B2 (en) 2001-11-30 2008-02-26 Semiconductor Energy Laboratory Co., Ltd. Vehicle, display device and manufacturing method for a semiconductor device
US7580085B2 (en) 2002-06-28 2009-08-25 Sharp Kabushiki Kaisha Optical device and display operating in two dimensional and autostereoscopic three dimensional modes
WO2004003630A1 (en) 2002-06-28 2004-01-08 Sharp Kabushiki Kaisha Optical device and display operating in two dimensional and autostereoscopic three dimensional modes
US7502392B2 (en) 2003-09-12 2009-03-10 Semiconductor Energy Laboratory Co., Ltd. Laser oscillator
US7260135B2 (en) 2003-09-26 2007-08-21 Semiconductor Energy Laboratory Co., Ltd. Light emitting device
US20080224951A1 (en) * 2007-03-16 2008-09-18 Motorola, Inc. Visual interface with configurable viewing area for electronic device
US8188474B2 (en) 2008-10-16 2012-05-29 Semiconductor Energy Laboratory Co., Ltd. Flexible light-emitting device
US20100149149A1 (en) * 2008-12-15 2010-06-17 Lawther Joel S Display system
US8766269B2 (en) 2009-07-02 2014-07-01 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device, lighting device, and electronic device
US20120140147A1 (en) * 2009-10-09 2012-06-07 Eiji Satoh Display panel, display system, portable terminal and electronic device
US20110134145A1 (en) * 2009-12-04 2011-06-09 Sony Corporation Display device and method of controlling display device
JP2011228759A (ja) 2010-04-15 2011-11-10 Yanagisawa Ken 画像用フレーム
US20110254037A1 (en) 2010-04-16 2011-10-20 Semiconductor Energy Laboratory Co., Ltd. Light-Emitting Device and Electronic Device
JP2011238908A (ja) 2010-04-16 2011-11-24 Semiconductor Energy Lab Co Ltd 発光装置、及び電子機器
US20120075166A1 (en) * 2010-09-29 2012-03-29 Samsung Electronics Co. Ltd. Actuated adaptive display systems
US20130114193A1 (en) * 2011-11-08 2013-05-09 Samsung Electronics Co., Ltd. Flexible display apparatus
US20130135259A1 (en) * 2011-11-28 2013-05-30 Jeffrey Stapleton King Robust Optical Touch - Screen Systems And Methods Using A Planar Transparent Sheet
US20130155655A1 (en) * 2011-12-19 2013-06-20 Moungyoub Lee Display apparatus
US20130164437A1 (en) 2011-12-22 2013-06-27 Semiconductor Energy Laboratory Co., Ltd. Film Formation Apparatus and Film Formation Method
US8859304B2 (en) 2011-12-23 2014-10-14 Semiconductor Energy Laboratory Co., Ltd. Light-emitting device and manufacturing method thereof
US20140045283A1 (en) 2012-08-10 2014-02-13 Semiconductor Energy Laboratory Co., Ltd. Method for Manufacturing Light-Emitting Device
US20140118319A1 (en) * 2012-10-29 2014-05-01 Samsung Display Co., Ltd. Flexible display device and method of compensating for luminance of the flexible display device
US20140307314A1 (en) 2013-04-12 2014-10-16 Semiconductor Energy Laboratory Co., Ltd. Display device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Egawa.Y, "Three Dimentional Effect Filter-Stress of Three Dimentional Effect-", The Journal of the Institute of Image Information and Television Engineers, Nov. 17, 2000, vol. 24, No. 72, pp. 7-12, The Institute of Image Information and Television Engineers.

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9710033B2 (en) 2014-02-28 2017-07-18 Semiconductor Energy Laboratory Co., Ltd. Electronic device
US10139879B2 (en) 2014-02-28 2018-11-27 Semiconductor Energy Laboratory Co., Ltd. Electronic device
US11899886B2 (en) 2014-02-28 2024-02-13 Semiconductor Energy Laboratory Co., Ltd. Electronic device
US11474646B2 (en) 2014-02-28 2022-10-18 Semiconductor Energy Laboratory Co., Ltd. Electronic device
US10809784B2 (en) 2014-02-28 2020-10-20 Semiconductor Energy Laboratory Co., Ltd. Electronic device
US9888593B2 (en) * 2015-12-11 2018-02-06 Au Optronics Corporation Back plate of curved display device and curved display device using same
US20170171998A1 (en) * 2015-12-11 2017-06-15 Au Optronics Corporation Back plate of curved display device and curved display device using same
US10268238B2 (en) * 2017-06-08 2019-04-23 Google Llc Foldable display neutral axis management with thin, high modulus layers
US10514724B2 (en) * 2017-06-08 2019-12-24 Google Llc Foldable display neutral axis management with thin, high modulus layers
US10833132B2 (en) * 2017-11-28 2020-11-10 Nissha Co., Ltd. Hard coat-attached film type touch sensor and flexible device using same
US20200111845A1 (en) * 2017-11-28 2020-04-09 Nissha Co., Ltd. Hard coat-attached film type touch sensor and flexible device using same
US20200097044A1 (en) * 2018-09-24 2020-03-26 Apple Inc. Hybrid coverlay/window structure for flexible display applications
US10817016B2 (en) * 2018-09-24 2020-10-27 Apple Inc. Hybrid coverlay/window structure for flexible display applications
US11402868B2 (en) * 2018-09-24 2022-08-02 Apple Inc. Hybrid coverlay/window structure for flexible display applications
US20230011092A1 (en) * 2018-09-24 2023-01-12 Apple Inc. Hybrid coverlay/window structure for flexible display applications
US11846984B2 (en) * 2018-09-24 2023-12-19 Apple Inc. Hybrid coverlay/window structure for flexible display applications
CN109618042A (zh) * 2018-10-30 2019-04-12 努比亚技术有限公司 显示距离控制方法、可折叠终端及计算机可读存储介质
CN110740598A (zh) * 2019-10-14 2020-01-31 Oppo广东移动通信有限公司 壳体及制备方法、电子设备

Also Published As

Publication number Publication date
JP7062741B2 (ja) 2022-05-06
US20150145755A1 (en) 2015-05-28
JP2016053704A (ja) 2016-04-14
US9864411B2 (en) 2018-01-09
JP6788711B2 (ja) 2020-11-25
KR20210128373A (ko) 2021-10-26
JP2021028725A (ja) 2021-02-25
KR20150061573A (ko) 2015-06-04
KR102315659B1 (ko) 2021-10-20
JP6592239B2 (ja) 2019-10-16
US20170153671A1 (en) 2017-06-01
JP2019211784A (ja) 2019-12-12
KR102437527B1 (ko) 2022-08-26

Similar Documents

Publication Publication Date Title
US9864411B2 (en) Display device
US10534401B2 (en) Display device, module, display system, and electronic device
KR102525809B1 (ko) 전자 기기
TWI788272B (zh) 顯示裝置
TWI642170B (zh) 顯示裝置及電子裝置
KR102389626B1 (ko) 표시 패널 및 표시 패널을 포함하는 유기 발광 표시 장치
US11069718B2 (en) Display device, display module, and electronic device
CN107768539A (zh) 柔性显示装置
JP2016029464A (ja) 表示装置
JP2015143843A (ja) 電子機器
CN112510073A (zh) 一种显示面板及显示装置
JP7200418B2 (ja) 半導体装置
EP4239377A1 (en) Lens array and display device including the same
US20240114753A1 (en) Pixel and Viewing Angle Control Display Device Including the Same
JP2022115080A (ja) 表示装置
JP2008084638A (ja) 発光体

Legal Events

Date Code Title Description
AS Assignment

Owner name: SEMICONDUCTOR ENERGY LABORATORY CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:YAMAZAKI, SHUNPEI;YANAGISAWA, YUICHI;IKEDA, HISAO;SIGNING DATES FROM 20141114 TO 20141120;REEL/FRAME:034254/0860

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4